MK5 Golf GTI
General => Product Reviews => Topic started by: Tfsi_Mike on August 08, 2013, 10:16:25 pm
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I have been lucky enough to get hold of a Go Faster Bits (GFB) DV+ kit so will be doing some ongoing reporting & reviewing.
What is it?
The GFB Dv+ kit is a kit that has been developed to improve a known possible weakness in the TFSI boost system.
It works by replacing some of the original parts of your DV, whichever revision you may have.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2FMy_Leon_Cupra%2FMods%2Fdv2_zps7bdf3d8e.jpg&hash=9969da474023bb7a659957f04eff170866a46404)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2FMy_Leon_Cupra%2FMods%2Fdv_zps9babe865.jpg&hash=fcc6e477e6b8f4cd5acf51b4d680f667bc6e84ad)
Above the picture clearly illustrates the parts in the kit.
Sales speel
Lifted from GFB website - See here (http://www.gfb.com.au/dv-plus-diverter-valve-for-late-model-vag-and-euro-applications)
The solenoid coil itself from the factory-fitted valve is great (the ECU opens it faster than any pneumatic valve so why replace it?), but the weak point however is the valve mechanism itself. So GFB’s DV+ solves this problem by replacing just the valve parts with an anodised billet aluminium housing fitted with a brass piston machined to exacting tolerances.
The end result is sharper throttle response, lightning-fast valve actuation, and it will hold as much boost as you can throw at it. Read all about the DV+ story on the next page.
Other manufacturers’ products involve replacing the entire system with a traditional pneumatic valve, requiring long vacuum hose runs, additional parts for tapping into the intake manifold vacuum, plus either a different solenoid valve to actuate the pneumatic valve or a ballast resistor to plug into the OE wiring loom. All these additional items result in a product that is slower, less responsive, more expensive and takes much longer to install.
GFB’s DV+ solution on the other hand is more responsive, less expensive, easier to install, and doesn’t cause compressor surge/turbo flutter. Oh, and it doesn’t require different springs or frequent re-builds.
Where from?
Mine was supplied by Julian at Balance Motorsport
Balance Motorsport Contact Page (http://www.balancemotorsport.co.uk/main.asp?sitepages=ContactPage)
I have dealt with Balance a couple of times before and Julian has been helpful on the phone and prompt in comms by email.
How Much?
The Dv+ Kit is £99 inc Vat
Alternatives
Retain OEM standalone DV
Forge DV
Forge Supersize DV
Evoms Dv
and probably quite a few more...
Fitting
Fitting is very straight forward on the Ko4 TFSI. Probably a little more awkward on the Ko3.
Took me a couple of minute max including double checking the O-rings where located correctly and dabbing some oil on the piston with my finger. (Wear gloves)
There is a very clear colour fitting guid in the box.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2FMy_Leon_Cupra%2FMods%2Fnull_zps93c7cc3f.jpg&hash=92310e7db5203d54e2fb91e8e475cef1db15a03c)
Just remove this part of your DV and add the DV+ kit as per the picture. (This is the part you would check if you had issues with loss of boost)
Why bother?
The rubber diaphragm DVs have been known to split. I have had a Rev C valve split. The ko3 cars might be particularly prone to splitting diaphragms as the DV is nearer the turbo and gets much hotter.
The kit removes the rubber part of the DV and replaces it with a piston, providing a fit and forget reliability upgrade.
Testing
With fitting being so easy it will be dead easy to do a back to back at the next track day.
I will be contacting Keith at APR Motorsport this evening about the use of their Dyno for a back to back test also.
So far I have done 10 miles or so (8 Aug). It actually feels like throttle response has picked up a little. The car went very very well. It is a cool evening and there isnt much fuel (read weight) in the car.
On WOT the needle on the boost gauge doesn't quickly flicker as boost climbs like it usually does. The fluttering noise from the engine on WOT seems to have gone too! I have tried my stock and st2+ map.
I have a run to Cheshire and back on Saturday so should give the opportunity for some different driving conditions to feel any noticeable differences.
I am in contact with someone else testing one on a St2+ Cupra too. I will add any of his thoughts and findings ver batum.
Any questions please feel free to ask.
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As promised, Lees findings;
"Hi mate. Yeah I like it. Noticeable improvement for me. Amd said it gave just under 10 hp increase on before and after RR. This is what I wrote on the AMD FB page:
I’ve had the new DV+ on for a few days now and have had time to drive the car about. What I immediately noticed was the improvement in throttle response , I have a 1:1 linear REVO throttle map on the car and have always found this a little slow to respond compared to the ‘normal’ map but with the DV+ you get the best of both worlds.
Ive also found It gives a smoother control of initial power.
Power wise I think the car feels like it pulls harder through the full rev range instead of tailing off towards the top end, I’m not sure if this is the ‘placebo effect’ or not. But overall the DV+ noticeably improves the drive.
I was surprised to be honest I thought it was a bit of a gimmick. Even the wife commented on the improved smoothness of the car, and I never mentioned it had been fitted."
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Do they think this is advantageous over the D 'piston' type valve?
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Do they think this is advantageous over the D 'piston' type valve?
It has been reported that the D type can leak boost.
I think it was R-tech Nick that bench tested some D valves.
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Yep, so if its proven to work and be reliable, this could be an ideal solution.
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does look good, not surpised Mike already has one though! :P
I'll add it to my leon once the throttle body problem is resolved... I know what you mean when the needle flutters/surge even* on the boost gauge as I get it on mine (REV G)
Good review :happy2:
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Group-buy :happy2:
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Group-buy :happy2:
Well reminded...
Hi Rich
I think you want one of these but don't want to buy one. The man from GFB said he'll give you one to trial
For everyone else if we can sell 5 then I can offer 5% off - I expect I can also save on shipping - just need to get a quote from the post office - special delivery is £8 but signed for will be about £6
For 10 or more then we can do 10% off the the price
cheers
Julian
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Do they think this is advantageous over the D 'piston' type valve?
It has been reported that the D type can leak boost.
I think it was R-tech Nick that bench tested some D valves.
The plastic piston valves leak so badly you can blow through the DV with them in closed position. Tests in Holland on another thread reveal they are equivalent to a 6mm hole in the intercooler. Now of course peak boost will still be achieved with a 6mm hole in the intercooler BUT the turbo will be working harder and therefore generating more heat and the engine will be using more fuel. The lack of flutter and surge are the same benefits claimed with the Respons TMS valves but they're vacuum valves and you wouldn't install one of those, where you have the choice of superior factory solenoid control together with the leak proof and reliable DV+ piston.
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+1 for a groupbuy :happy2:
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The car performed fantastically at Cadwell park yesterday.
I did forget to remove the DV+ for back to back. Certainly wasn't lacking boost.
I think the improvement is small but noticeable. It helps to be able to see how the boost gauge behaves as well as the butt Dyno.
I think the Dv+ would give a sensible bomb proofing of the oe valve. Yes you could buy a couple of oe replacement valves but this gives a fit and forget option for less hassle. With what feels like the added benefit of crisper throttle response.
I still aim to back2back Dyno. I am eager to hear what Mr. Wigley finds and thinks about it.
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No word off Julian yet.... i did PM him. :happy2:
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Im also for group buy(If there will be option to ship it to Slovenia)...
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I'd have one in a gb :happy2:
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There are several up for a GB on the VagTuning and leon owners club Facebook pages
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I'd be interested in a GB as well. Before I knew any better I swapped mine for a Rev D. Rather than buying and fitting a Rev G if I can use this to permanently fix my Rev D then I think that would be a better solution.
Thanks for letting us know of this Mike.
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Exactly what I did sub :happy2:
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get it ready :) dude woo :drool:
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I'm up for a group buy. I don't like my current revD
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Interested in this too
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Going to take my 2 month old RevG out for inspection tomorrow, due to a huge drop in boost today, if its ripped I'd be up for a group buy too.
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Interested in a GB. :happy2:
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Sounds like this could be better than both D and G valves. GB would be good peeps. :happy2:
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I'm interested too for a GB.
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It does seem damn expensive for what it is (also requiring a stock DV body), so how much would a GB bring this down by? :popcornsoda:
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It does seem damn expensive for what it is (also requiring a stock DV body), so how much would a GB bring this down by? :popcornsoda:
NOt sure bit usually these GBs are about 5-10%
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I have just ordered one for myself :laugh:
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Will need to get the Ball rolling for the GB, Gentlemen & Ladies! :drinking:
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I might be interested in a GB depending on price and timescale as I'm not messing about with a DV when the weather starts to get crap again.
Has anyone tried one on a k03 yet?
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Cant get better timing than this (a bit spooky to be honest ) just been on balance motorsport page because i havent had a look what they do since i had my mk4 golf,then i saw these and was wondering if anyone had done a review and then i come on here and there is a thread on them,again i might show some interest in a group buy if possible.
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I'm interested in this as well
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Interested in this also...
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Would defo be interested in one of these as aim having boost problems at the moment I have a revision g in but still whistling like mad on the turbo spooling any ideas guys
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I would like to see back to back runs on the same dyno between a new Rev G and this as I don't believe a healthy rev G would lose anything to this.
Bearing in mind the cost of what is basically a few bolts and a fancy diaphram you're looking at nearly the price of 2 and a half OEM Rev G DVs all of which come with the solenoid housing!! :stupid:
I'm interested in it but until someone like Niki gives it his blessing from his experience then I'll be sticking with Rev G on a yearly replacement.
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I would like to see back to back runs on the same dyno between a new Rev G and this as I don't believe a healthy rev G would lose anything to this.
Bearing in mind the cost of what is basically a few bolts and a fancy diaphram you're looking at nearly the price of 2 and a half OEM Rev G DVs all of which come with the solenoid housing!! :stupid:
I'm interested in it but until someone like Niki gives it his blessing from his experience then I'll be sticking with Rev G on a yearly replacement.
If this new device can be proven 100% reliable then its a great advantage.
The rev G can still split. If your on a trackday or something, and the diaphram splits, then you day is over.
Aditionally, on k03 and some bit turbo setups, the DV is very hard to replace due to its awkward location, so for me changing the DV once per year is a no-no.
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If this new device can be proven 100% reliable then its a great advantage.
The rev G can still split. If your on a trackday or something, and the diaphram splits, then you day is over.
Aditionally, on k03 and some bit turbo setups, the DV is very hard to replace due to its awkward location, so for me changing the DV once per year is a no-no.
Yes the Rev G can still split but rarely does it just go POP immediately. It would be a small hole at first and then develops from there. If you have a boost gauge you can easily spot any problems. It took 20 minutes to change my DV on my gti (so k03s) but yes it's kind of awkward.
You can just do a DV relocation if it bothers you but £100 for something which is pretty unproven is a lot of money.
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If its longevity and sealing can be proven then its worth the money all day long, but at this price it's going to take a while to get a broad spectrum of user opinions.
They should offer the forum 100 at half price so we can do their marketing for them. :smiley:
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Was on the phone to R-Tech yesterday about getting a b2b Dyno done but they're pretty booked up!
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Was on the phone to R-Tech yesterday about getting a b2b Dyno done but they're pretty booked up!
Send me the DV+ ill wangle my way in.... :wink:
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I offered to post it to Niki but he has one on its way to him already
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I offered to post it to Niki but he has one on its way to him already
:happy2:
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Revision G DV is better than S3 revision D DV?
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Hurdys thoughts on this bit of kit
http://www.mk5golfgti.co.uk/forum/index.php/topic,71541.msg765437.html#msg765437 (http://www.mk5golfgti.co.uk/forum/index.php/topic,71541.msg765437.html#msg765437)
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Cheers for the link Mike :happy2:
I just went out straight away to see what the difference ( if any ) was and can re-iterate most of what has already been said, with the addition of confirming mine held a little more boost at the top end. I guess this is due to me using a boost controller which works off a fixed duty cycle on a setting to make target boost, so like for like duty cycle gave me a little more boost, which must mean my OEM DV was leaking boost a little. Response seems pretty OEM, but is definitely smoother on part throttle, where before it was a little fidgety/twitchy.
I'd definitely give it the thumbs up if I dropped an 11.xxx on Monday on the 1/4 mile :grin:
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id be up for one of these too.
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go.. i'll fire my name down as well.. would be grand if these could be sorted and shipped prior to me going in October to get a stage 1+ map in... lol
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ill sign up to a GB too
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Just a heads up . . . .
The DV+ that's on the market at the moment is only really suitable for k03. It's made to suit the compressor housing.
From what I heard the k04 version is still in its design stages and will have a slightly larger piston to suit the remote DV housing on s3/ed30 etc. the difference is minimal but boost leaks and boost flutter have been reported on mapped k04 cars.
The k04 version should be available in just 2 weeks though apparently.
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LOL..... so anyone whos put this on a K04, is using the wrong part! :signLOL: :signLOL: :signLOL:
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This is bit strange. Mike and Hurdy have it on K04 without problem.
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It looks like it was originally designed to suit both k03 and k04, but since a small number of k04 cars have had issues they have since discovered that the bore in the remote DV housing is slightly bigger than the bore in the k03 compressor housing
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I've got an Evoms DV on mine now :innocent:
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I've got an Evoms DV on mine now :innocent:
So you took off the DV+?
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Yes.
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I've got an Evoms DV on mine now :innocent:
Do tell more :party:
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I don't care what the GFB DV+ says. There was something bugging me but I couldn't put my finger on it as boost was slightly better than on the OEM DV, so it works. However Steve Jr suggested trying the manual Evoms DV and I gained another 2.5psi for the same duty cycle. The car felt stronger again over the GFB and sounded a gazillion times better ( too much sound for pussies! :evilgrin:)
On a slight down side the GFB is better on part throttle, but that's about it really.
I can only surmise it must be leaking under load, but the advertising bumf says it should take anything you throw at it!!
If this is designed for a K03 and they are bringing out a K04 one then I was mis-sold as it said on their website that it was good for the Golf R! :fighting:
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Ok i will be the first to say it. :star:
So what are they going to call this new revision when it comes out. . :grin:
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Ok i will be the first to say it. :star:
So what are they going to call this new revision when it comes out. . :grin:
DV++
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Lol
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Some K04 cars have been causing problems. The solution is a stronger spring and this will be supplied with all the kits in future. For anyone having a problem with a K04 they can get the modified spring from their supplier.
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Some K04 cars have been causing problems. The solution is a stronger spring and this will be supplied with all the kits in future. For anyone having a problem with a K04 they can get the modified spring from their supplier.
Thank you for that, I'll contact GFB direct and see what happens. When/if I get the stronger spring I will give it another attempt and feedback my findings. :happy2:
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Ok i will be the first to say it. :star:
So what are they going to call this new revision when it comes out. . :grin:
DV 2+?
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This was sent to me as a reply on a request for my edition 30 from a UK shop:
"
Sorry but we are finding issues with them fluttering on the K04 cars,
however GFB are now aware and a new version willb e here in about 3
weeks :)
"
Sent from my iPad using Tapatalk
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I thought I would add a response straight from the horses mouth. I have been in contact with the guys at GFB for a few weeks now and asked about the recent situation. Here is some of the response;
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It appears that the factory remote diverter valve mounting block runs a larger diameter inlet bore than the turbocharger compressor mounted models. This is a concern as it actually plays a huge part in the valve area ratio of the forces acting on the DV+ piston. Although it is not a problem on all of these vehicles, this is still not acceptable. We have seen factory mounting block diameters ranging anywhere from 18.8mm to 19.7mm, so there clearly is a tolerance issue on the factory part which we must work with. Essentially, what is happening in the practice is these remote mounted units are only just partially trying to open the DV+ piston due to the incorrect piston/face area ratio. This is only with higher than stock boost levels. Still not acceptable.
Our solution: We have nearly completed an almost identical design DV+, but using a larger piston diameter. This will completely eliminate any issues, and ensure 100% fitment on every vehicle remote mounted diverter valve. These New DV+ replacements are approximately two weeks from being available. The current DV+ will continue production unchanged for all VAG vehicles fitted with direct turbocharger mounted diverter valves.
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That was a week ago now so they may have adapted this further. The engineer there seems a pretty switched on guy so confident they will get on top of it pretty soon.
My DV+ arrived in the post the other day and will be fitting it on the weekeend :party:
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This looks like a good product, it must be a bit embarrassing for them that the R&D is being done after its hit the market though. The price isn't going to break the bank but does seem quite steep when you look at what's included in the kit.
Its not like they can blame the price on "Product Development" like APR do.
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They should sell it with their own housing to prevent tolerances issues. Something like this product http://www.kmdtuning.com/index.php?_a=viewProd&productId=2443&catId=saleItems
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so... the long and short of it is (as i understand it)
The DV+ works grand on the K03, if a little more noisy than stock, so perhaps not to everyones taste.. but doesnt work as effectively on the K04 due to differences in the production diameter of the sealing faces
Overall its a decent product?
Whats the lead time on these.. ie if i was to order from Balance.. how long to deliver? looking at the site today.. it looks about £105 all in (shipped to UK address)
Is there any word on a GB.. if so.. what kind of reduction would we be talking about?
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so... the long and short of it is (as i understand it)
The DV+ works grand on the K03, if a little more noisy than stock, so perhaps not to everyones taste.. but doesnt work as effectively on the K04 due to differences in the production diameter of the sealing faces
Overall its a decent product?
Whats the lead time on these.. ie if i was to order from Balance.. how long to deliver? looking at the site today.. it looks about £105 all in (shipped to UK address)
Is there any word on a GB.. if so.. what kind of reduction would we be talking about?
The idea behind it all seems to be a solution to a handful of problems. If they can crack the fitment for the K04 as well then it could be a must do mod. Not a crazy amount of money relative to other aftermarket "solutions". Fitment is easier than other systems that requires vacuum hosing and if the benefits of reliability and added performance then great! Will test this out myself and see what it's all about, hoping to solve a turbo lag issue after quick high boost gear changes and if this solves it then happy days!
I would hang fire on a GB until the K04 version is available otherwise getting number will be tricky. Usually 5-15% is the normal sort of range to expect.
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I've got an Evoms DV on mine now :innocent:
This is the one to go for, but at the time I could never get hold of one... are they more readily available?
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I thought I would add a response straight from the horses mouth. I have been in contact with the guys at GFB for a few weeks now and asked about the recent situation. Here is some of the response;
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It appears that the factory remote diverter valve mounting block runs a larger diameter inlet bore than the turbocharger compressor mounted models. This is a concern as it actually plays a huge part in the valve area ratio of the forces acting on the DV+ piston. Although it is not a problem on all of these vehicles, this is still not acceptable. We have seen factory mounting block diameters ranging anywhere from 18.8mm to 19.7mm, so there clearly is a tolerance issue on the factory part which we must work with. Essentially, what is happening in the practice is these remote mounted units are only just partially trying to open the DV+ piston due to the incorrect piston/face area ratio. This is only with higher than stock boost levels. Still not acceptable.
Our solution: We have nearly completed an almost identical design DV+, but using a larger piston diameter. This will completely eliminate any issues, and ensure 100% fitment on every vehicle remote mounted diverter valve. These New DV+ replacements are approximately two weeks from being available. The current DV+ will continue production unchanged for all VAG vehicles fitted with direct turbocharger mounted diverter valves.
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That was a week ago now so they may have adapted this further. The engineer there seems a pretty switched on guy so confident they will get on top of it pretty soon.
My DV+ arrived in the post the other day and will be fitting it on the weekeend :party:
having spoken with GFB today the new piston (although tested) won't be used as the spring solves the problem.
They sent me this "The position is that initially when a couple of cars had a problem, we found the very large factory tolerance of the inlet bore and position. We assumed that this what was troubling a handful of cars. When investigating further, we also found a large tolerance in the factory spring rate also. The inlet bore proved to be no real problem for our original piston. There are very few cars which have a spring rate that is not up to the job, which is not highlighted with the OE valve because it leaks so much anyway.
We have now made a new spring to replace the OE spring that will be distributed to anyone who needs it within 10-14 days.
Please bear with us as we come to grips with VAG’s manufacturing tolerances."
re delivery times - i have them in stock
re GB discount up to 5 units - 5 % over 10 -10 % max - the margins in this product are small and no different to a more expensive product - give any more than this away and it simply isn't commercially viable to sell. This market isn't like childrens toys where they make them for a £1 and sell them for £10!
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Alex pointed me back to my own thread after I called him with some boost related problems.
I need to re-read the recent posts properly but it seems people may have had a similar problem.
I did nearly 80 miles on Cadwell Park and the car felt really strong. Nice steady drive hime and sensible gentle use since then.
Last couple of days the car has felt a little gutless compared to usual. Peaking 5psi lower than normal and feeling 'less powerful'
With the DV+ being the only recent change on the car, I will revert back to revision G and see if she is back to full steam.
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Julian I did say when emailing about testing one of these it might be an idea to discuss DV spring rates with GFB and Niki from R-Tech as Niki has experimented with spring rates on ko3 & ko4 cars. :P
May I request the revised spring? :smiley:
Hopefully tomorrow fitting my Rev G guts will have the car back to full health so I do'nt have to start chasing my tail.
Wont have time to do any logs now till next weekend.
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Is this only a problem on k04?
I'm booking my car in to get my front suspension top mounts changed on Monday and was going to get them to supply and fit me a DV+ for my k03
Should I cancel and just get a new rev G?
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I've got an Evoms DV on mine now :innocent:
This is the one to go for, but at the time I could never get hold of one... are they more readily available?
I managed to get one from Statllers, who had them in stock. :happy2:
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Is this only a problem on k04?
I'm booking my car in to get my front suspension top mounts changed on Monday and was going to get them to supply and fit me a DV+ for my k03
Should I cancel and just get a new rev G?
You should be okay with the K03. The DV+ was initially designed for it.
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yeah would be interesting to see if that issue mike is having is related to the K04 issue..
I'm looking into buying this (just need to time it so it doesnt arrive before i get back from the rig so SWMBO finds out i've been spending yet more money on the car) but want to be nigh on positive its not going to make the car worse prior to going for its stage 1..
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Hi mike.
I've been told that there is a different springs being shipped with these for k04 tfsi motors, over the ones in our setup (early version).
Heard anything?
I'm going to give AMD a bell tomorrow to ask.
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its all documented above Lee
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its all documented above Lee
Cheers mate. Not sure how I missed all the above! It's this bl00dy new tapatalk!
I'm going to swap mine back to be on the safe side until all this is resolved.
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Are all the oem DV electronic bits the same and only the valve part different? That's what I assume?
I have my original DV still and AMD used the rev D valve on the car to fit the gfb DV+ too.
My plan was to re assemble the rev D to normal and refit. Then use my old original DV to make the DV+ once I get the uprated spring.
I'm presuming this should work?
Cheers
Lee
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Copied from mkVI
Important updates to DV+ T9351
GFB Technical Bulletin
DV+ (part # T9351) leak issue
5th September, 2013
Since the DV+ was released, it became apparent that there were significantly more variables than our initial testing revealed. This is because we have a patent pending on this product, and we were limited in how many different cars we could use during development since you cannot disclose the product to the public until the patent has been lodged.
The Audi/VW community has made us aware of a leaking issue with some of our DV+ valves, for which we’ve now engineered a solution.
The leaking issue is the result of a number of contributing factors, however it can be generally said that the problem is most common on cars using the K04 turbo. This is because in most cases, cars equipped with the K04 turbo run higher boost.
What we found is that it is possible for the plunger inside the solenoid coil to be forced open by high boost pressure, which results in a drop in pressure behind the main piston, causing the valve to partially open.
Whilst our initial testing showed the plunger to be capable of holding in excess of 30psi, we’ve since found that variations in the factory spring and a slight difference in the diameter of the o-ring used on the front of the plunger leads to significant differences in the ability of the plunger to stay shut under load.
Initially, a stronger plunger return spring seemed like a good solution, but after testing as many solenoid coils as we could, it appeared that the electromagnetic strength of the coils varies significantly, especially when hot. Therefore some coils were not able to reliably open the valve when a stronger spring was used.
Our solution? We have made changes to both the spring and the plunger to ensure that it does not get pushed open under boost, and that it continues to open reliably when the solenoid is energised by the ECU.
The changes to the DV+ T9351 kit are detailed below:
We have manufactured a spring that holds the plunger down with more than twice the force of the original factory spring
To ensure the solenoid is able to reliably retract this harder spring, the plunger has been made slightly longer to shorten the stroke. This means the electromagnetic retraction force of the coil on the plunger is significantly increased
The diameter of the silicone o-ring on the front of the plunger has been reduced so the area exposed to the boost pressure is smaller, which further increases its ability to resist being pushed open (smaller area means for a given pressure there is less force being applied)
All new T9351 DV+ kits come with the new plunger (which can be identified by its black colour as opposed to the silver finish of the original plunger) and spring.
For the earlier DV+ T9351 models, all that is required is to replace the existing plunger and OE plunger spring with the parts supplied in the GFB upgrade kit
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Nice to see they are active on an initial problem... :happy2:
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Nice to see they are active on an initial problem... :happy2:
It is mate. But no mention of FOC upgrade kit for those already with an earlier version.
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After fitting my DV+ and after the issues raised on here I decided to refit my original valve until the upgrade kit came out,
I emailed AMD today to see we're I stand etc and this is the response I got within 5 mins of emailing them :smiley:
Hi Neil,
We received a new order of DV+'s yesterday and with them was some revised
parts for us to send out to any customers they may have the issue. If you
could please let me know your address and I shall have a kit sent out to
you.
Regards
Ben
AmD Tuning (Essex)Ltd.
Follow the AmD Tuning BTC
Now that's customer service :happy2:
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After fitting my DV+ and after the issues raised on here I decided to refit my original valve until the upgrade kit came out,
I emailed AMD today to see we're I stand etc and this is the response I got within 5 mins of emailing them :smiley:
Hi Neil,
We received a new order of DV+'s yesterday and with them was some revised
parts for us to send out to any customers they may have the issue. If you
could please let me know your address and I shall have a kit sent out to
you.
Regards
Ben
AmD Tuning (Essex)Ltd.
Follow the AmD Tuning BTC
Now that's customer service :happy2:
I'm going to get straight onto them myself then!
-
Nice to see they are active on an initial problem... :happy2:
It is mate. But no mention of FOC upgrade kit for those already with an earlier version.
Had an Email today to say that my upgrade kit is in the post and No mention of a payment required :happy2:
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Nice to see they are active on an initial problem... :happy2:
It is mate. But no mention of FOC upgrade kit for those already with an earlier version.
Contacted GFB direct and was pointed in the direction of Ben @ AMD and both couldn't have been more helpful.
Upgrade kit on the way and no charge.
Seems they've met this head on, excellent customer service :congrats: :congrats:
-
Got my upgrade kit through the post today :smiley:
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi601.photobucket.com%2Falbums%2Ftt94%2FNeilGti%2Fnull_zps3cf978f3.jpg&hash=cdeec70608b75105b4c05f5828089e5ee325de87)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi601.photobucket.com%2Falbums%2Ftt94%2FNeilGti%2Fnull_zpsb3128548.jpg&hash=c01c4e6bf3b17283d02842788f0bc5af4a419731)
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.... And???? :popcornsoda:
-
.... And???? :popcornsoda:
And..........Not had chance to fit it yet :P
Gonna try n get it fitted today and report back, after I put the standard one back in it pulled like a train, the 1st version of the DV+ must of leaked like hell,
Will see if this new one is any better, made it slightly longer and with a stronger spring.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi601.photobucket.com%2Falbums%2Ftt94%2FNeilGti%2Fnull_zps72f21c03.jpg&hash=4c158a8b6a3d5c0472de5e3444e4e596cb3e66ab)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi601.photobucket.com%2Falbums%2Ftt94%2FNeilGti%2Fnull_zps4811e28a.jpg&hash=900db369f8bae95e94db5b3c377eaf8f0b224ac5)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi601.photobucket.com%2Falbums%2Ftt94%2FNeilGti%2Fnull_zpsa557565b.jpg&hash=4b2b47aea4a44bf54ce4afe492f7a7014e555518)
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Just wondering was there much change in the sound with this? Cheers
-
Well it's been a few days now since I fitted my updated DV+ parts,
It is much better than the original at holding the boost and throttle response is pretty much instant, still get the flutter when pressing on the gas and lifting off tho ?
All the spiel says that it eliminates the flutter, but it's not the case on mine,
So pretty pleased with it so far,
-
done quite a few now in our workshop and positive comments all round on this :)
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Well I think the updated DV+ parts are doing the business, managed a decent couple of runs on the dyno today at R-Tech :happy2:
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi601.photobucket.com%2Falbums%2Ftt94%2FNeilGti%2Fnull_zpsc2bb4b13.jpg&hash=1386a9d05e19e0a4e5fdfaf772fe380b5b11309a) (http://s601.photobucket.com/user/NeilGti/media/null_zpsc2bb4b13.jpg.html)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi601.photobucket.com%2Falbums%2Ftt94%2FNeilGti%2Fnull_zpsf2e8bc4f.jpg&hash=45d8d44b5222a9e4f5f208c6c77e46dc0572b6d9) (http://s601.photobucket.com/user/NeilGti/media/null_zpsf2e8bc4f.jpg.html)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi601.photobucket.com%2Falbums%2Ftt94%2FNeilGti%2Fnull_zps4f21a114.jpg&hash=64723cfce3c694ac199f00234e348ac6b272726b) (http://s601.photobucket.com/user/NeilGti/media/null_zps4f21a114.jpg.html)
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Has anyone fitted one to a K03 yet? I'm gunna get one this week before I get map.
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Well I think the updated DV+ parts are doing the business, managed a decent couple of runs on the dyno today at R-Tech :happy2:
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi601.photobucket.com%2Falbums%2Ftt94%2FNeilGti%2Fnull_zpsc2bb4b13.jpg&hash=1386a9d05e19e0a4e5fdfaf772fe380b5b11309a) (http://s601.photobucket.com/user/NeilGti/media/null_zpsc2bb4b13.jpg.html)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi601.photobucket.com%2Falbums%2Ftt94%2FNeilGti%2Fnull_zpsf2e8bc4f.jpg&hash=45d8d44b5222a9e4f5f208c6c77e46dc0572b6d9) (http://s601.photobucket.com/user/NeilGti/media/null_zpsf2e8bc4f.jpg.html)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi601.photobucket.com%2Falbums%2Ftt94%2FNeilGti%2Fnull_zps4f21a114.jpg&hash=64723cfce3c694ac199f00234e348ac6b272726b) (http://s601.photobucket.com/user/NeilGti/media/null_zps4f21a114.jpg.html)
that's a huge amount of horsepower. Was that expensive to get to that level? It must be close to Supercar quick with that amount of power. It would certainly beat a Countach over a 1/4 Mile! Regarding the "flutter" with the stronger spring this tech tip might be useful
http://www.gfb.com.au/tech/tech-articles/69-dv-t9351-tech-tip
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Still trying to fully understand these charts, what does the red line underneath signify and what does the blue line mean?
Is red pre map?
-
Interested to know if anyone has fitted one of these to a K03 too, replaced my DV with revision G but after reading all of this it makes me want to change it again
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Still trying to fully understand these charts, what does the red line underneath signify and what does the blue line mean?
Is red pre map?
Just two WOT separate runs they are only just over a minute apart. Very consistent. You'd expect a slight variation between each run (tyre temp/oil temp/ water temp/ air temp)
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Still trying to fully understand these charts, what does the red line underneath signify and what does the blue line mean?
Is red pre map?
Red line is BHP
Blue line is torque
-
Thanks rich
-
Thanks rich
whoops sorry I read your question right! The red and blue lines were labelled so I though you meant the two different runs
Apologies
-
[/quote]
that's a huge amount of horsepower. Was that expensive to get to that level? It must be close to Supercar quick with that amount of power. It would certainly beat a Countach over a 1/4 Mile! Regarding the "flutter" with the stronger spring this tech tip might be useful
http://www.gfb.com.au/tech/tech-articles/69-dv-t9351-tech-tip
[/quote]
Thanks for the link :happy2: I may have to try that ? I'm getting use to the flutter now tho :smiley:
Regarding mods it's pretty much all what's listed in my sig, I have fitted these bit by bit over the last 4 years, pretty much what most do to the mk5s, but I have been told that the Tsi head on the mk6 is much more free flowing hence the power gains over the mk5 with the similar mods,
If you add all the parts up it will be over 10k spent but the car feels great and surprises so many other more expensive metal, so £ for punch I think it's pretty good for a measly Golf :grin:
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Fitted mine, with a rev G. Revo stage 2 car. BOTH springs fitted, no flutter, feels more awake on low revs and during acceleration.
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Both springs?
So no big change then?
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i get the flutter on the oem valve.. if one of these was to make it more pronounced i'd be all over one of these! lol
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Both springs?
So no big change then?
Steve,
There has been reports that some K04 cars have been getting the fluttersound when you let off the throttle, like with the Forge spacer/ ITG open cone filter and standard diverter valve.
There is a bulletin on the GBE website (Link in this thread somewhere) that says you can achieve the flutter by removing the spring behind the brass plunger.
This will be at the sacrifice of throttle response. Yes there is a difference, i've noticed it more sub 2,800/3,000 rpm much more alive.
Dan
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i get flutter now if i let it build boost then let off quick... but why anyone would want to create that sound i dont know...
hmm, tempted to buy one of these..
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I got a low end wine on mine as totally std car, now ive fitted an induction kit you get the whoosh when letting off the throttle under boost.
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Fitted one to my K03 gti today... Pain in the arse to get to but is a brilliant fit non the less.
Looking to get it mapped in new year so will hopefully see good results with this fitted. Car certainly responds better now I have fitted the GFB DV+ Feels loads better in 4th gear pulling from low revs.
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Fitted mine,not noticed a great deal but the dv was not split which I took off.
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Guys got a set recently and wonder if I am missing a part?
I don't have the orange cylinder first on the left in the below pic
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fq481%2FKregiel%2FDSC01911_zps0251396f.jpg&hash=260454da3259ea45e621b98d4b8550d622b7bc3d)
This is what I have
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fq481%2FKregiel%2FDSC01910_zpsdb83da40.jpg&hash=55e947917a302e0ed3d0b5fb976a41e2571183d4)
Cheers
Paul
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You will struggle without that Paul
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Your missing the main plunger part.
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cheers guys!
Paul
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would it make any sense , changing from forge to this, on my mk5 gti???
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I've fitted this to my own GTI and it made a difference to the way the car pulls through the rev range, which has been amplified since getting a stage 1 remap and other bits bolted on. It's a good "fit and forget" part and a cheap way to really improve the engine (and ironically, a bit of fuel economy!)
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fitted that and car seems slower and achieved only 1.2 boost vs 1.6 I had normally. Also response is much slower than with stock so gonna put back the stock one. A bit disappointed to be frank
Paul
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You seem to be running a K04 there has been an update on the internal spring contact your supplier.
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Revision G is the only DV you need. No need for this OEM- (see what I did there??) part
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Revision G is the only DV you need. No need for this OEM- (see what I did there??) part
Ah more input by a person who has never run the part.
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We don't have AIDS but don't need to try it to know we wouldn't want it.
Rev G is honestly fine even for stage 2 + applications. Plus it's like what £90 + a Diverter valve so assuming your DV goes once a year (which on a G isn't likely but hey) and they cost £42 each you're financially no better off.
It's like a Carbonio intake, a bit pointless!!!
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Is G the original one with the rubber bung?
Sent from my GT-I9505 using Tapatalk 4
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Revision G is the only DV you need. No need for this OEM- (see what I did there??) part
Ah more input by a person who has never run the part.
Don't be a clown. The rev G holds stage 2+ boost not problem. This part is total BS.
Waste your money on it if you want!!
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Is G the original one with the rubber bung?
Sent from my GT-I9505 using Tapatalk 4
Think the original was a 'B' (Green) but same sort of thing as the 'G' (Orange), with rubber diaphragm.
You can grab the G's online for about £30.
If I was running a relocation kit on the K03 or K04 I'd use Rev.G's but having fooked the original B and two G's - I think the location of the Turbo to DV is damaging the diaphragm, so the DV+ would make sense for K03 (My D version leaked boost out of the box).
The price of the DV+ is probably a good £50 too much though.
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I forgot to put in the long spring that's why I had too little boost... :ashamed:
Now all sorted and the part works like charm. Car seems to be revving quicker and holds boost very well
Happy!
Paul
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got mine orderd and cant wait for it :) stage 2+ (shark 3) is on my s3 and i think this will help a good bit :)
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Has nick at r tech had a chance to test the dv+ yet ?
-
Chap on SCN with a 2.OTFSI (CDL) Leon Cupra R APR Stage2+ did some logging on his car.
Rev G vs this and the Rev G was alot better
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Has nick at r tech had a chance to test the dv+ yet ?
yes!
Also Forge DV got a slating for not holding boost too :chicken:
Rev G is still best :happy2:
Forge: http://www.mk5golfgti.co.uk/forum/index.php/topic,78399.msg818211.html#msg818211
http://www.mk5golfgti.co.uk/forum/index.php/topic,78399.msg818561.html#msg818561
DV+: http://www.mk5golfgti.co.uk/forum/index.php/topic,78399.msg818313.html#msg818313
http://www.mk5golfgti.co.uk/forum/index.php/topic,78299.msg818097.html#msg818097
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Im sure i have my G somewhere, i upgraded to D... and i have the forge (but not fitted)... all that and we are saying G is best :|
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When I had the gti stage 2 mapped by nick he said take the dv+ off soon as, for a g as the g is better. I didn't get a chance to swap back to a g before I sold it.
-
Rev h now replaces rev g. Anyone using the new version ?
-
No h users ?
-
No h users ?
Is 'H' Diaphragm or Piston?
-
Its a D without the basket around it iirc.
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Piston so the dealer says
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Good write up, I'm new to vag ownership but will be getting one of these in the next month. :)
-
Good write up, I'm new to vag ownership but will be getting one of these in the next month. :)
If you read the whole thread you will see most people who bought them have since gotten rid
-
[quoteIf you read the whole thread you will see most people who bought them have since gotten rid
[/quote]
without reading all 7 pages, why have people been removing them? and what is the best replacement?
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This part is offline at awesomegti.
They said that there are some problems "yes customers experienced faults with the GFB DV+"
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Just thought I'd throw in my views of this product.
I had my car in the shop yesterday to replace a worn CV joint . When I say worn, I mean it was bone dry and needed to be cut out! Weird thing is the CV boot wasn't split so who knows where the grease went? :scared:
Anyway, whilst it was in I asked them to fit a new Rev G DV as the car has done 97k and thought it was a good preventative measure as I was struggling to get 30 mpg on a 'sensible' run, although is still pulled really well when I drove it hard.
Turns out the car already had a GFB DV+ fitted, but after reading this post I asked them to swap it out anyway so that I could compare and I could easily drop the GFB back in if I needed to.
Anyway, even though it's only been a day here are my initial thoughts.
I took it on a 'sensible run' with the kids through A & B roads and clocked up 38 mpg average, way more than I was getting on a long-distance cruise! This is a huge difference :happy2:
I know that better fuel economy isn't everyone's idea of an improvement, and let's be honest I wouldn't have a GTi if I was that bothered about it, but when you do quite a few miles it's nice to know you can get reasonable mpg when you want to. The car also seems to start slightly quicker, has smoother idle and even appears slightly quieter although this could all just be my perception.
The throttle response does seems a little slower, but not by much and when I floor it it seems to pull just as well up through the revs.
I know it's early days but all in all, I prefer the way the car drives with the Rev G fitted but will give it a few weeks of driving before I give my final verdict.
Hope this helps some of the guys who are undecided which DV to fit.
-
Fitted the revision G yesterday (06F 145 710G) and what a difference it makes! It's totally changed the way the car drives! Definitely recommend this part.
-
Fitted the revision G yesterday (06F 145 710G) and what a difference it makes! It's totally changed the way the car drives! Definitely recommend this part.
Rev G + DV+ ? right ?
-
Fitted the revision G yesterday (06F 145 710G) and what a difference it makes! It's totally changed the way the car drives! Definitely recommend this part.
Rev G + DV+ ? right ?
I think he means just the OEM Rev G, without ruining it with the DV+ :grin:
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DV - you mean
-
So everyone will remove this DV+ then and take OEM DV rev G ?
What about rev G issues ?
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fj117%2Fraskham%2FDV-Seal_zps83498403.jpg&hash=8c13a0ad69d6ffaf4c05a20c2f2f6cf06dbe2ac5)
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I honestly don't understand that someone would fit a Revision G again, those here in Denmark that have chosen the GFB DV+ are more than happy running them. The cars reach the requested boost faster and have a more stable boost when having the DV+ fitted.
But ETTO IMO :wink:
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Some people have issues :
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg.xooimage.com%2Ffiles100%2Fd%2Fa%2Fc%2Fd-faut-moteur-gti...pr-turbo-45ae2bf.png&hash=9b68ade3624033708ee177856ca0b9dea335fed7)
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For the doubters - it's worth re-reading the thread. Trusted tuners on the forum have found it to leak boost (along with the Forge DV also).
OK, the OEM Rev G may still split after time, but you could replace every 2yrs if your worried anyway and treat it as a consumable. :happy2: it is the best DV for drivability and holding boost
DV+ is an expensive attempt at solving a problem, which didn't work.
Hurdy is trying another possible fix, not sure how he has got on with it. . .
-
Had a post-revision GFB dv on my eddy for a few months now.
Considered this upgrade on a cost+ basis for the oem that needed changing at apr remap.
A nicely made, well presented item.
Easy fit to the eddy.
No issues.
Drives well.
-
Hi,
Had to post on the diverter valve.
Got a 05 GTI a couple of months ago (black, lots of optional extras) but within 500 miles had low oil pressure warning, two weeks in the garage, £500 for replacement oil pick up which was blocked with silicon from whoever replaced the balance cam a few months earlier!
Anyway, 3000 miles later and I'm thinking this car is a bit disappointing on the old acceleration front! I know....sacrilege. But, I've had MK1 GTI's, MK2 GTI 16 valver's, Corrado VR6 and I'm used to a good pull all the way to the redline, you know proper acceleration and this MK5 just wasn't impressive.
Well, I self diagnosed the diverter valve as the problem (through reading forums) and replaced it a few days ago with the GFB £102 part using the directions in this thread.
Yes Yes Yes!!!!!!!!!!!!!!!!!!!!!!! Massive difference. Big smile now.
The silicon diaphragm was shot and only hanging on by a thread. Who knows how long this GTI has been under performing and how many others there are out there with a broken DV?????
It took me about an hour an a half. Using the tools recommended in this post. To be clear, I gained access for the 1/4 wrench by jacking drivers side (chocking well) removing the plastic trim, lying alongside the front of the car and reaching in with one hand. Top tip is to tape your wrench to the extension and the extension to the 5mm hex. This way you won't drop these bits during the job. Most of the time was getting confident that I had access to the DV and the car wasn't going to crush my arm. Swapping the GFB bits onto the OEM solenoid was easy as was refitting.
I guess I effectively was driving a 2.0 L 16V with no turbo. Now I have the Turbo boost working to the redline! Ready for a remap now ;-)
-
Wasnt the revision a good improvement?
-
What are the latest impressions of this product? All of sudden Im clearly down on power, turbo spools slower so I think my g-version dv just went bust. I ordered this dv+ as a permanent solution.. Lets see how it feels with my k03 stage 2.
-
What are the latest impressions of this product? All of sudden Im clearly down on power, turbo spools slower so I think my g-version dv just went bust. I ordered this dv+ as a permanent solution.. Lets see how it feels with my k03 stage 2.
I can't see the facts changing tbh.
If it leaked boost and was expensive before. . . :chicken:
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What are the latest impressions of this product? All of sudden Im clearly down on power, turbo spools slower so I think my g-version dv just went bust. I ordered this dv+ as a permanent solution.. Lets see how it feels with my k03 stage 2.
I can't see the facts changing tbh.
If it leaked boost and was expensive before. . . :chicken:
But this was only with some k04 applications right? From what I have read it should work well with k03?
-
It also works very well with my Precision 5558 solution, :happy2:
-
Confused as these seem to get a mixed review on here but the boys on audisportnet seem to all rave about it :stupid:
Could it be the k03 and k04 being the critical difference? :popcornsoda:
-
Important updates to DV+ T9351
GFB Technical Bulletin: DV+ (part # T9351) leak issue: 9th September 2013.
Since the DV+ was released, it became apparent that there were significantly more variables than our initial testing revealed. This is because we have a patent pending on this product, and we were limited in how many different cars we could use during development since you cannot disclose the product to the public until the patent has been lodged.
The Audi/VW community has made us aware of a leaking issue with some of our DV+ valves, for which we’ve now engineered a solution.
The leaking issue is the result of a number of contributing factors, however it can be generally said that the problem is most common on cars using the K04 turbo. This is because in most cases, cars equipped with the K04 turbo run higher boost.
What we found is that it is possible for the plunger inside the solenoid coil to be forced open by high boost pressure, which results in a drop in pressure behind the main piston, causing the valve to partially open.
Whilst our initial testing showed the plunger to be capable of holding in excess of 30psi, we’ve since found that variations in the factory spring and a slight difference in the diameter of the o-ring used on the front of the plunger leads to significant differences in the ability of the plunger to stay shut under load.
Initially, a stronger plunger return spring seemed like a good solution, but after testing as many solenoid coils as we could, it appeared that the electromagnetic strength of the coils varies significantly, especially when hot. Therefore some coils were not able to reliably open the valve when a stronger spring was used.
Our solution? We have made changes to both the spring and the plunger to ensure that it does not get pushed open under boost, and that it continues to open reliably when the solenoid is energised by the ECU.
The changes to the DV+ T9351 kit are detailed below:
We have manufactured a spring that holds the plunger down with more than twice the force of the original factory spring
To ensure the solenoid is able to reliably retract this harder spring, the plunger has been made slightly longer to shorten the stroke. This means the electromagnetic retraction force of the coil on the plunger is significantly increased
The diameter of the silicone o-ring on the front of the plunger has been reduced so the area exposed to the boost pressure is smaller, which further increases its ability to resist being pushed open (smaller area means for a given pressure there is less force being applied)
All new T9351 DV+ kits come with the new plunger (which can be identified by its black colour as opposed to the silver finish of the original plunger) and spring.
For the earlier DV+ T9351 models, all that is required is to replace the existing plunger and OE plunger spring with the parts supplied in the GFB upgrade kit.
We thank you for your patience and feedback whilst we have implemented this solution. All product supplied since Spetember 2013 has the correctly upgraded kits.
Best regards,
Brett Turner B.E. (Mechanical)
Design Engineer
Go Fast Bits
www.gfb.com.au
+612 9534 0099
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Hello,
I've fitted the Rev D to my car about 8 months ago. Recently I had a fault about the DV, since then I got a Revo stage 1 not long after I noticed the fault. The car went like hell for a few days and now I've noticed its not so punchy. The fault on the DV came back again. Reading around I gather the Rev G is the one to go for. From what I've read here, buying the DV+ is the way forward. Will this work well with the Rev G?
-
It works with any of them as the solinoid is the same. The DV+ only replaces the diaphragm part. No harm in using the latest revision as a starting point though!
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It works with any of them as the solinoid is the same. The DV+ only replaces the diaphragm part. No harm in using the latest revision as a starting point though!
Ah so i wouldn't have to buy another DV, just use my current Rev D :smiley:
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That's what I did.
-
sweet, that's resolved that issue. Next is engine mounts and poly bush everything
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Then bigger brakes, lower coil overs, stiffer anti roll bars, more power... It never ends. :drinking:
-
Well engine mounts, eibach anti rolls, suspension bushes etc. S3 Brakes yes, but that comes with needing bigger wheels. fuel pump and then stage 2. By then i'll be nearing for a new car lol
-
Fitted the DV+ the other day. Comparing it to rev D, it feels that I gain boost earlier at lower rpm's. No data to prove this, just my feeling. Hopefully it will eliminate the turbo lag between fast gear changes.
-
Fitted the DV+ the other day. Comparing it to rev D, it feels that I gain boost earlier at lower rpm's. No data to prove this, just my feeling. Hopefully it will eliminate the turbo lag between fast gear changes.
Ko3 or ko4?
-
Ko3 or ko4?
K03 and pulling strong :driver:
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I bought 1 GFB DV+ for my Peugeot 3008 1.6 Turbo Petrol, I know VW and Peugeot stock diverter valve is identical. After install the "hiss" sounds become lesser but the build quality is definitely better than stock. I also wrote a step by step guide here here http://www.buddyjoy.com/blog/car-howto/installation-gfb-diverter-valve-peugeot-16-thp-engine (http://www.buddyjoy.com/blog/car-howto/installation-gfb-diverter-valve-peugeot-16-thp-engine) with pictures and video. :party: :party:
-
Hi,
Had to post on the diverter valve.
Got a 05 GTI a couple of months ago (black, lots of optional extras) but within 500 miles had low oil pressure warning, two weeks in the garage, £500 for replacement oil pick up which was blocked with silicon from whoever replaced the balance cam a few months earlier!
Anyway, 3000 miles later and I'm thinking this car is a bit disappointing on the old acceleration front! I know....sacrilege. But, I've had MK1 GTI's, MK2 GTI 16 valver's, Corrado VR6 and I'm used to a good pull all the way to the redline, you know proper acceleration and this MK5 just wasn't impressive.
Well, I self diagnosed the diverter valve as the problem (through reading forums) and replaced it a few days ago with the GFB £102 part using the directions in this thread.
Yes Yes Yes!!!!!!!!!!!!!!!!!!!!!!! Massive difference. Big smile now.
The silicon diaphragm was shot and only hanging on by a thread. Who knows how long this GTI has been under performing and how many others there are out there with a broken DV?????
It took me about an hour an a half. Using the tools recommended in this post. To be clear, I gained access for the 1/4 wrench by jacking drivers side (chocking well) removing the plastic trim, lying alongside the front of the car and reaching in with one hand. Top tip is to tape your wrench to the extension and the extension to the 5mm hex. This way you won't drop these bits during the job. Most of the time was getting confident that I had access to the DV and the car wasn't going to crush my arm. Swapping the GFB bits onto the OEM solenoid was easy as was refitting.
I guess I effectively was driving a 2.0 L 16V with no turbo. Now I have the Turbo boost working to the redline! Ready for a remap now ;-)
I've never remapped before but I did the Superchips Bluefin remap to 240 bhp last March..........Absolutely worth the money!!!!!!!!!! It now feels like a GTI should. If you can insure it, then go for it.
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changed mine, took about the same time, easier if you were double jointed.
Have to say didnt like being under and up into the car, had in on axle stands but still, :scared:
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Oh cool, ill just go ahead and click that link
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What are people's thoughts on the newer version? I fitted a rev g last year before going 2+ (ko3), but that been about a year now and I am planning on renewing it, don't think there is an issue, but just replacing as an annual measure along with can follower.
Thing is, my brother is running a stage 2 tsi and after only a few months, done in a rev g so he has fitted one of these and reckons there is a noticeable difference in sound and pickup.
Anyone else fitted a new version and has tested for boost leaks like the first version?
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I've got a GFB valve sitting in the boot awaiting fitting :signLOL:
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@r5gtt (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11199) let me know if your selling it :signLOL:
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@r5gtt (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11199) let me know if your selling it :signLOL: No worries :happy2:
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My Revised G has given up. So will be ordering my DV+ now :happy2:
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@r5gtt (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11199) let me know if your selling it :signLOL: No worries :happy2:
@shoaybmakda (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=12148) sorry mate cars staying so dv is also staying in the boot for now untill I get time to fit it. :sad1:
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No worries - not in a rush so will keep an eye out for any others thanks for letting me know
Sent from my iPhone using Tapatalk
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:smiley:
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worth a purchase for a mk6 golf r stage 2?
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worth a purchase for a mk6 golf r stage 2?
Yes, if you need to replace your DV rev. G. You can wait for the OEM DV to get damaged from wear.
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Ive recently bought another one to try out
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Well, its only taken you 3 years to buy one... sell one... and buy another!! :signLOL:
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It's been that long? :O
Must've driven my car at least six times!
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:popcornsoda:
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Tfsi_Mike you've out did the gfb dv + and now we're all buying them I think :thinking:
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R-tech saying its holding up really well,ill purchase 1 shortly myself through Amd essex with my rev g will get eaten by my water methanol soon enough lol
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Will the GFB DV+ fair up any better against WMI though? I thought it was the solenoids that fail on them from memory? If so, I can't see how the DV+ will make much difference to the life of the solenoid since both use pressure equalisation to the rear of the piston to hold it closed, therefore WMI can and will get through to the rear of the piston and in to the solenoid.
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I would say the diaphragm itself fails and not the solenoid as my dv has been on since the cars birth 2005 and it's a rev B :surprised: just my 2p worth as ive not read anyone's thread saying the dv solenoid has failed.
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Sometimes the solenoid does fail, so does the spring. When I was up at r-tech the other nikki told me to check the spring on my REV G which isn't very old.
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It's posible but I've got the uprated spring with my dv + so hoping it should be fine.
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I would say the diaphragm itself fails and not the solenoid as my dv has been on since the cars birth 2005 and it's a rev B :surprised: just my 2p worth as ive not read anyone's thread saying the dv solenoid has failed.
Methanol injected pre-TB on K04 cars is known to kill the solenoid rather than split the diaphragm.
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Methanol is highly concentrated stuff.
WMI systems are meant to be great for cooling aren't they?. didn't know they messed up the dv so learnt something new today :happy2:
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Niki put up a load of pictures on Facebook (TFSI Tuning) demonstrating the differences (will need to search on a PC to find it).
Obvious signs of a fake were the sticker on the box looking distinctly sh*t i.e. very basic and not having a barcode. The billet body of the fakes had 4 holes compared to the genuine which has 3 (perhaps the copy was based on an old design?). The brass piston on the fakes had a very poor finish compared to the genuine item too.
As for the old versions, I believe it had a different piston and plunger, and they may have been a different colour but not 100% sure.
To be honest I would just save up the cash for a new one from AMD
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Sutting to do with the colour of the piston I believe. R5 posted it couple weeks ago. In this or the other thread. I just made a call to amd
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That one is young enough to be the last revision, AFAIK.
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Ive found someone who bought two from demon tweeks in march this year, he doesnt know if its the latest revision though, does anyone know how to tell if its the latest revision?
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Ftriellymtb%2FMobile_Uploads%2Freceived_10154199042412930_zps96dxdrof.jpeg&hash=410ea2d457a87c1f0366a3d9c0235ec3f196ca13)
pesky pesky pesky always asking questions :signLOL:
The revised version has a brass colour piston and stronger springs and the older version had a black piston. Also the picture you've posted has a date on it :doh:
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So its the revised version then? I thought thr newer revision had the black plunger?
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If it was bought in March it should be the latest revision.
Don't confuse the plunger and the piston. Piston is brass and the plunger is black
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wrong thinking pesky :slap: as Dansays
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Found the FB post:
(https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/12800169_10208810227992921_4489891390574828297_n.jpg?oh=b507de33c3d242b6ea8d898aeceff949&oe=57CA238C)
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So are these reccomended by R-Tech? They check the DV anyway so I imagine turning up with one (asking first) an getting it installed before a stage 1 re map should be ok?
MK5 Gti stock, not sure what DV is fitted. Isn't it a pita on the mk5 to check?
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It is a pain to check on a K03 GTI, but R-tech do this before all Stage 1 tuning as you say. If you turn up with one they'll probably fit it there and then if you ask them as it only takes seconds once the DV is out.
Niki has tested these and found there is no loss of performance compared with a G, but the valve response (throttle changes) is much improved. I would wholly recommend it on a K03 as a fit and forget item - I got fed up of changing Rev G's every few months
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Cheers Dan, I'll be sure to buy one before my visit, I'll be getting it done soon, had my VW caddy mapped last year & is been a huge improvement.
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Finally installed a VWR intake to compliment stage 2. So far everything is great EXCEPT that ridiculous whine you get on boost.
I've done a bit of research and many have said that the DV+ removes the whine? Some have also said the Rev D or G also gets rid of the whine.
Can anyone confirm any of the above?
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Finally installed a VWR intake to compliment stage 2. So far everything is great EXCEPT that ridiculous whine you get on boost.
I've done a bit of research and many have said that the DV+ removes the whine? Some have also said the Rev D or G also gets rid of the whine.
Can anyone confirm any of the above?
I have a VWR intake and a DV+. What whine are your referring to? The sound of the DV releasing pressure when you take your foot off the gas pedal?
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The whine is a K03 thing....... It's a harmonic resonance caused by the intake - some cars do it, some don't. The DV+ will not make any difference, neither will changing to a Rev D or G. Don't forget the valve is fully closed on WOT when the whine is present.......
Adjusting the intake can help though. The first intake I made for my car whined terribly - horrid noise. I ended up chopping and changing pipe angles & lengths until I completely eradicated it
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Thanks for the explanation @Dan_FR (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=9513)! :drinking:
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Finally installed a VWR intake to compliment stage 2. So far everything is great EXCEPT that ridiculous whine you get on boost.
I've done a bit of research and many have said that the DV+ removes the whine? Some have also said the Rev D or G also gets rid of the whine.
Can anyone confirm any of the above?
I have a VWR intake and a DV+. What whine are your referring to? The sound of the DV releasing pressure when you take your foot off the gas pedal?
That 'goose honk' whine when you get on the boost. Its freaking annoying.
I've tightened the hoses and made a few adjustments, but I doubt it'll fix it. I've been told the DV+ or the Rev D/G will fix it.
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Follow Dan_FR's advice or fit a K04. I really like the sucking sound mine makes. Deeper than before but still subtle enough. :smiley:
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I'm going to get a DV+ and see for myself it removes the honk.
The sound is totally different to any induction/darth vader sound.
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Good review