MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Performance Modifications => Topic started by: dpalmer_220992 on January 17, 2016, 11:41:16 pm

Title: What Dump Valves Are People Using?
Post by: dpalmer_220992 on January 17, 2016, 11:41:16 pm: Hi all!

I'm after fitting a dump valve to my mk5 gti but unsure what to go for. From reading up I've found that most people are keeping clear of the forge spacers. So what other options are available?

Cheers, Dan!
Title: Re: What Dump Valves Are People Using?
Post by: Dan_FR on January 17, 2016, 11:42:15 pm: Standard!!
Title: Re: What Dump Valves Are People Using?
Post by: dpalmer_220992 on January 17, 2016, 11:42:56 pm: I want a little more noise though!
Title: Re: What Dump Valves Are People Using?
Post by: Golf2286 on January 18, 2016, 12:03:04 am: I had a bov fitted for about 2 weeks than removed it as did y head in :signLOL:
Title: Re: What Dump Valves Are People Using?
Post by: AJP on January 18, 2016, 12:35:20 am: VW Revision G diverter valve.

If you want noise get an aftermarket intake.
Title: Re: What Dump Valves Are People Using?
Post by: Dan_FR on January 18, 2016, 06:37:39 am: As above, get an intake, add a remap and you'll have all the noise you want
Title: Re: What Dump Valves Are People Using?
Post by: dpalmer_220992 on January 18, 2016, 10:28:02 am: Yeah I've been looking through the forum and everyone seems to go down the intake route. The Ramair one looks good value too so I might have to invest in one of those.

Does it make the car more thirsty though?
Title: Re: What Dump Valves Are People Using?
Post by: LVS Racing on January 18, 2016, 03:53:02 pm: The O.E Revisions are good but once you start tuning your vehicle then you really need to look at maybe a Forge Item.. They certainly hold boost alot better over the Stock valves
Title: Re: What Dump Valves Are People Using?
Post by: r5gtt on January 18, 2016, 03:59:18 pm: There must be many tfsi owners with blow off valves on and not complaining as I did it to my tt but got fed up of the bailey dump valve as it was mega loud so changed thay for a Forge recirculation valve. When I replaced the turbo tip to 3inch and fitted a cone filter to that is when I heard a lovely sound from the filter sucking in and whossssh whossssh :jumping:

I have this spare if anyone is interested.

(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi1374.photobucket.com%2Falbums%2Fag433%2FSandy1786%2FMobile%2520Uploads%2F20151128_175236.jpg&hash=cfaaae9a580a7bc58fcca7d45f85d96121dc781f)
Title: Re: What Dump Valves Are People Using?
Post by: vRSAlex on January 18, 2016, 06:58:14 pm: Quote from: LVS Racing on January 18, 2016, 03:53:02 pm
The O.E Revisions are good but once you start tuning your vehicle then you really need to look at maybe a Forge Item.. They certainly hold boost alot better over the Stock valves

No chance. The stock valve is far better. Do you have any proof that the Forge is better at holding boost than a stock G valve?
Title: Re: What Dump Valves Are People Using?
Post by: jl1 on January 18, 2016, 07:38:37 pm: i have a forge dump valve fitted to mine and i only own the car since last friday and its doing my head in.
first chance i get to put it up on the ramps its coming off.
too much noise. i dont want to be heard coming a mile down the road.
Title: Re: What Dump Valves Are People Using?
Post by: pudding on January 22, 2016, 11:16:46 am: GFB DV+ for me.
Title: Re: What Dump Valves Are People Using?
Post by: B8ted on February 01, 2016, 12:10:57 pm: I've just fitted a Neuspeed P-Flo intake to mine as i wanted some extra noise and i'm truly amazed at how loud it is. Really no need for a DV with one of these intakes.
Title: Re: What Dump Valves Are People Using?
Post by: K2 NYJ on March 17, 2016, 04:18:32 am: PUDDING does the gfb dv+ make more noise?
Title: Re: What Dump Valves Are People Using?
Post by: pudding on March 18, 2016, 09:22:37 am: Not that I've noticed.
Title: Re: What Dump Valves Are People Using?
Post by: Paradox1 on March 18, 2016, 01:01:41 pm: I think Niki from Rtech has been reviewing the GFB DV recently. not sure of the outcome yet though
Title: Re: What Dump Valves Are People Using?
Post by: Shoduchi on March 18, 2016, 01:10:33 pm: Quote from: Paradox1 on March 18, 2016, 01:01:41 pm
I think Niki from Rtech has been reviewing the GFB DV recently. not sure of the outcome yet though
He has detected fake GFB DV+. I still need to know if all genuine items work properly. I bought one genuine recently that I ordered from the official European online store and sold by SuperPro Deutschland. I should find out soon if it works well.
Title: Re: What Dump Valves Are People Using?
Post by: pudding on March 18, 2016, 02:22:42 pm: Jesus, is there nothing that doesn't get faked these days?! I wonder if my missus is fake :grin:

Anyway, they appear to work well. I don't really get the workings of it if I'm honest but I've tried the original cheese one, rev D, rev G and the GFB DV+. The GFB definitely feels the more responsive off boost and holds boost the best, which lets face it, is the main reason we replace them because the rubber OEM ones can't handle aftermarket boost pressures.

Regarding R Tech testing DVs, didn't they mention the spring in the Rev G isn't strong enough for high boost, or something?
Title: Re: What Dump Valves Are People Using?
Post by: MS1 on March 20, 2016, 04:15:22 pm: Quote from: Pudding on March 18, 2016, 02:22:42 pm

Regarding R Tech testing DVs, didn't they mention the spring in the Rev G isn't strong enough for high boost, or something?

If R-Tech have said that are they referring specifically to Ko4's? Because I was asked to remove my Forge DV prior to going to see them on the 23rd of March and replace with the Rev G. Having done that, I can feel that the Rev G helps boost lower down by around 200-300rpm, but for sure it's flatter across the entire rev range than the Forge DV and it's very noticeable. I used to spike at around 21. 5psi, hold at 18psi and taper off to around 13/14psi, but now I'm sure I'm not getting above 20psi and it seems to taper off more significantly too. I'm intrigued to see what happens come Wednesday.
Title: Re: What Dump Valves Are People Using?
Post by: bonelorry on March 20, 2016, 04:35:34 pm: Revision G on my 6R, Ran the same on my Edition 30.

Both made very healthy figures at R-Tech both pre and post a Stage 1 map.