yes the ED30 does have stronger internals but the compression is better on ours. i believe.
....
But why is higher compression better?
Now your making me nervous with my Stage 2 !!!!
KO4 KO4 KO4 :mad: :jumpmove: That would be my decision but then again I can never get enough POWER! :jumping: The second hand KO3 sounds like a viable option and a relatively inexpensive one at the same time. As you say you dont want 300 neddies going through your front wheels so this has gotta be the route to go down! :happy2:
Robin, have you ever been on any other rollers? Maybe JKM have had theirs recalibrated since your first run way back when. I am aware that DD rollers are supposed to be the most tightly regulated, by the manufacturer - and if JKMs were being "over generous" when initially installed - a subsequent recalibration might have down-corrected their readings. I simply mention this because you seem to be saying that the stage 2 "seems better" - so your butt-dyno is telling you the stage 2 is better, but the RR is telling you the opposite.
Engine oil - what brand, type and spec oil do you use? And what is your oil consumption like? Do you religiously keep it topped up to the max by adding small amounts frequently, or do you let the oil get fairly low and then add quite a lot?
Onto the specifics of oil in the turbo discharge pipe. Firstly, you stated "Inlet seals removed and cleaned and all ok in that area now" - but do you mean the seals on the pipework, the seals on the turbine shaft, or do you mean the valve stem oil seals for the "poppet valves" in the cylinder head?
Regarding actually finding oil in the turbo discharge pipe, I think this is fairly common. I found oil in mine, and inside the standard intercooler - but it wasnt much. Maybe one or two tablespoons, which is fairly reasonable. However, I wonder if the stock GTI intercooler has something to do with this? I personally reckon the stock i/c is slightly restrictive, which can cause a slight backpressure on the inlet side of the turbo. Since upgrading mine to the S3 cooler and twintercooler, I do notice a much more rapid rise in turbo boost - which prooves that the airflow through the inlet tract is much freer and less restrictive. Maybe this is also having an effect on the way that the oil vapours from the crankcase ventilation system are not getting to the combustion chambers quick enough. Think of having a hot shower in a closed bathroom - the shower will steam away, but if you have a mega powerful extractor fan immediately above the shower head, it will suck out all the steam. However, if you have a clogged, weedy fan, the steam wont get sucked out, but will condense on your bathroom mirror, and then dribble off the bottom edge.
Onto a couple of other issues. Did JKM plug in a VAG-COM to check for fault codes? And did they carefully monitor the N75 cycle?
Regarding the actual replacement of the turbo - only you can decide which is the best way. However, I would personally never recommend any second hand turbo, no matter how well the previous owner claimed to have looked after it. You only need to recall some of the threads on the other GTI fourm (revving engines whilst stationary, "blipping" throttles, correct turbo cool down - I even think that you mis-understood about the cool-down procedure), and it simply showed a fundamental lack of knowledge on how to car for an engine in general, let alone the specific requirements of a turbo. If I were forced to only take a 2nd hand turbo, then I would send it to a specialist turbo re-builder for a complete overhall and warranty.
If your original turbo is knackered, I would personally seek a specialist recon, or go for the genuine new VW part. Yes, I understand your POV that the official VW 2 year warranty will probably be void - but it is the "peace of mind" from getting an OEM supplied part - you can pretty much expect an OEM new turbo to last a long while, but how long will a slightly cheaper second hand one last. The labour charges will be the same, but if the 2nd hand one doesn't last, then someone will be paying the labour charges all over again.
Now your making me nervous with my Stage 2 !!!!
....I'm very confident it isn't down to Revo Stage2. Boost is set at 7, which isn't at all excessive. Also there are plenty people running Revo's Stage2 on the 2.0T FSI with very similar mods to mine (you for example!).
The boost graph shows that it's spiking at 1.2 bar and then dropping off badly from 2,400 revs.
Good on you Robin for staying so chipper about it, most after bad news like that would of parked it up on the drive and sulked, but you arrived in Birmingham smiling! :wink:
I for one was glad you did! :P
Good on you Robin for staying so chipper about it, most after bad news like that would of parked it up on the drive and sulked, but you arrived in Birmingham smiling! :wink:
I for one was glad you did! :P
By looking at the duty cycle of the N75 you can determine how hard your turbo is working to provide the requested pressure.
YOu can buy a turbo on an exchange basis from VW but I'm unsure of the pricing. The part number will normally end with an X.
So when are you going to install it neg?
KO4 KO4 KO4 :mad: :jumpmove: That would be my decision but then again I can never get enough POWER! :jumping: The second hand KO3 sounds like a viable option and a relatively inexpensive one at the same time. As you say you dont want 300 neddies going through your front wheels so this has gotta be the route to go down! :happy2:
....Too many neddies for my taste and also £4,000!
But importantly, as TT has posted:
"High turbo boost + big turbo + high compression ratio = much shorter engine life" -
Which translates to:
"Higher boost level from the remap + K04 bigger turbo + high compression ratio (GTI, not Ed30) = much shorter engine life" - Or so it seems to me.
But if you did go for the larger K04 turbo, then don't crank up the boost as much on the remap. :wink:
Robin, have you ever been on any other rollers? Maybe JKM have had theirs recalibrated since your first run way back when. I am aware that DD rollers are supposed to be the most tightly regulated, by the manufacturer - and if JKMs were being "over generous" when initially installed - a subsequent recalibration might have down-corrected their readings. I simply mention this because you seem to be saying that the stage 2 "seems better" - so your butt-dyno is telling you the stage 2 is better, but the RR is telling you the opposite.
....I went on some Dyno-Dynamic rollers at Weston Performance today but in Stock map (202.3 bhp) and with a boost graph which showed spike at 1.2 bar and bad drop off from 2,400 revs. Best to forget my butt-dyno!
Engine oil - what brand, type and spec oil do you use? And what is your oil consumption like? Do you religiously keep it topped up to the max by adding small amounts frequently, or do you let the oil get fairly low and then add quite a lot?
....Both!! Usually frequent top-ups but there have been a couple of low fills. VW approved Mobil from my dealer. Consumption was heavy for first few thousand miles but now not so often. I change my oil every 10,000 miles.
Regarding actually finding oil in the turbo discharge pipe, I think this is fairly common. I found oil in mine, and inside the standard intercooler - but it wasnt much. Maybe one or two tablespoons, which is fairly reasonable. However, I wonder if the stock GTI intercooler has something to do with this? I personally reckon the stock i/c is slightly restrictive, which can cause a slight backpressure on the inlet side of the turbo. Since upgrading mine to the S3 cooler and twintercooler, I do notice a much more rapid rise in turbo boost - which prooves that the airflow through the inlet tract is much freer and less restrictive. Maybe this is also having an effect on the way that the oil vapours from the crankcase ventilation system are not getting to the combustion chambers quick enough. Think of having a hot shower in a closed bathroom - the shower will steam away, but if you have a mega powerful extractor fan immediately above the shower head, it will suck out all the steam. However, if you have a clogged, weedy fan, the steam wont get sucked out, but will condense on your bathroom mirror, and then dribble off the bottom edge.
....Sounds like very good justification for a S3 intercooler! My priorities are (1) This turbo issue (2) Suspension due to KoniFSD issue (3) Powdercoat Monzas.
Onto a couple of other issues. Did JKM plug in a VAG-COM to check for fault codes? And did they carefully monitor the N75 cycle?
....Yes and no fault codes seen. Dunno about N75 cycle - What is that?
Regarding the actual replacement of the turbo - only you can decide which is the best way. However, I would personally never recommend any second hand turbo, no matter how well the previous owner claimed to have looked after it. You only need to recall some of the threads on the other GTI fourm (revving engines whilst stationary, "blipping" throttles, correct turbo cool down - I even think that you mis-understood about the cool-down procedure), and it simply showed a fundamental lack of knowledge on how to car for an engine in general, let alone the specific requirements of a turbo. If I were forced to only take a 2nd hand turbo, then I would send it to a specialist turbo re-builder for a complete overhall and warranty.
If your original turbo is knackered, I would personally seek a specialist recon, or go for the genuine new VW part. Yes, I understand your POV that the official VW 2 year warranty will probably be void - but it is the "peace of mind" from getting an OEM supplied part - you can pretty much expect an OEM new turbo to last a long while, but how long will a slightly cheaper second hand one last. The labour charges will be the same, but if the 2nd hand one doesn't last, then someone will be paying the labour charges all over again.
....As usual, you make a very good point. If the second-hand K03 costs £400 + £200?? for overhaul = £600 approx and a new VW one costs £650, which to go for? I don't know if it's true but I've heard that VW sell reconditioned turbos.
Thanks as always for your time and valuable input :happy2:
The problems I noticed was my boost would never meet requested, it would hit 1.3bar even if the ECU was requesting more, my gut feeling is that its a turbo issue or possible N75 but with the location of this on the TFSI being a right PITA its not easy to change.
would hair line cracks be shown up with the old smoke test - where the feed white smoke down to show up any leaks ?
if it is the turbo id be keen to know what caused it!! probs excessive heat as thats the only thing that can screw a turbo up isnt it?? or too much boost, but that would have probs blown then.
id look at gettin an i/c whilst the turbo is out :smiley:
The problems I noticed was my boost would never meet requested, it would hit 1.3bar even if the ECU was requesting more, my gut feeling is that its a turbo issue or possible N75 but with the location of this on the TFSI being a right PITA its not easy to change.
Where is the N75 valve on these?
....But if the problem is solved without any obvious fault being visible in the turbo, how much would you be keen to pay to send it to a specialist to find out?
Also my stock intercooler is not under any excessive demands whatsoever - Confirmed by JKM.
As I thought, JKM have checked the N75 logs and much much more, and all is ok. JKM have logs for over 200 2.0T FSI engines and I have every confidence in them and am booked in for Thursday to inspect and probably swop turbo's. I shalln't bother to spend extra money sending my turbo for testing by a specialist - Instead it may end up as a desk ornament!
WOW new turbo, you dont hear people needing new ones of these everyday!! :scared:
if it is the turbo id be keen to know what caused it!! probs excessive heat as thats the only thing that can screw a turbo up isnt it?? or too much boost, but that would have probs blown then. id look at gettin an i/c whilst the turbo is out :smiley:
....But if the problem is solved without any obvious fault being visible in the turbo, how much would you be keen to pay to send it to a specialist to find out?
after spending money to replace it, I doubt you would be that bothered if it fixed it.
Be useful to see any boost logs from yours to compare to mine before I go down this route!
if it is the turbo id be keen to know what caused it!! probs excessive heat as thats the only thing that can screw a turbo up isnt it?? or too much boost, but that would have probs blown then.
....But if the problem is solved without any obvious fault being visible in the turbo, how much would you be keen to pay to send it to a specialist to find out?
id look at gettin an i/c whilst the turbo is out :smiley:
....Unecessary at this stage - As I posted earlier, the logs show absolutely no problems with the stock intercooler's performance.
Until later this week, it's speculation.
The problems I noticed was my boost would never meet requested, it would hit 1.3bar even if the ECU was requesting more, my gut feeling is that its a turbo issue or possible N75 but with the location of this on the TFSI being a right PITA its not easy to change.
Where is the N75 valve on these?
Attached to the turbo more or less - if you stretch you knee's the wrong way and look down the back left you will 'just' see small pipes coming out from it.
Going back to the K04 option, is this a direct bolt on option for the K03 engine like the 1.8T's - just a thought as there were quite a few options for direct bolt on replacements to the K03 a couple of years ago. Do you really need to go as far as new injectors etc etc if you dont want to extract everything from it...
Be useful to see any boost logs from yours to compare to mine before I go down this route!
....JKM have all the logs for my car. Their usual policy is to respect the confidentiality of the customer. However, perhaps I could give permission - I would need to speak to JKM.
So it is actually bolted into the turbo housing? I understood that they could also be remotely mounted - or maybe I misunderstood. :confused:
Be useful to see any boost logs from yours to compare to mine before I go down this route!
....JKM have all the logs for my car. Their usual policy is to respect the confidentiality of the customer. However, perhaps I could give permission - I would need to speak to JKM.
The boost logs are your property. They relate to your vehicle, and you (presumably) paid for JKM to work on your car - so they are legally obliged to hand over any paperwork, old bits, etc.
well i cant recomend the s3 cooler enough!!! turbo spools up ALOT quicker and holds boost alot better higher up in the revrange!
its one of the only mods that i could feel the difference when driving! :jumpmove:
Or both. :smiley:
it was obviously difficult for me to tell weather it was the S3 or Forge :wink:
well i cant recomend the s3 cooler enough!!! turbo spools up ALOT quicker and holds boost alot better higher up in the revrange!
its one of the only mods that i could feel the difference when driving! :jumpmove:
well i cant recomend the s3 cooler enough!!! turbo spools up ALOT quicker and holds boost alot better higher up in the revrange!
its one of the only mods that i could feel the difference when driving! :jumpmove:
....I'm not saying that the S3 i/c isn't an excellent mod, but only that JKM's logs (no, they haven't removed the stock i/c for tests - TT please note) are not indicating any issues with my stock i/c.
To feel the difference on road rather than track, Joe, I reckon you must be driving your car like you stole her - But I suggest that without the experience of driving one myself.
Whereas JKM would of course like the extra business of installing a S3 i/c, all their logging etc on my car suggests that unless I was doing trackdays, my stock i/c is doing its job, and though a great mod, it's not one I need at present.
:happy2:
if it is the turbo id be keen to know what caused it!!
....But if the problem is solved without any obvious fault being visible in the turbo, how much would you be keen to pay to send it to a specialist to find out?
But surely, buy having it looked at by a specialist turbo engineer, they are very highly likely to be able to professionally report what damaged it in the first place. If you know what caused the damage, you can then take steps to prevent the same happening again.
In my very humble, and very independent opinion, I would strongly recommend upgrading the stock intercooler. With all your mods, the standard cooler is just placing un-necessary restrictions and loadings on the turbo. Why do you think that the S3 cooler is so highly rated?
trust me, you would know the difference. the spool up was alot slower on my car and a slight lag, now no lag whatsoever. have you got any graphs that you could post of your car on the RR? i can then compare this to some of my older ones! :smiley:
KO4 would need relocation of DV + new discharge pipe but theoretically it should work as long as you limit the boost, but then you wouldn't be running K04 specific software so it wont try and hold the boost for that long anyway.
trust me, you would know the difference. the spool up was alot slower on my car and a slight lag, now no lag whatsoever. have you got any graphs that you could post of your car on the RR? i can then compare this to some of my older ones! :smiley:
....Surely you should not have experienced any noticeable lag before the S3 i/c was installed. Butt dyno? Placebo?
No time to sort out graphs, pics of, uploading etc right now - I'll post an overview when this issue is solved - I have other priorities right now.
well i cant recomend the s3 cooler enough!!! turbo spools up ALOT quicker and holds boost alot better higher up in the revrange!
its one of the only mods that i could feel the difference when driving! :jumpmove:
....I'm not saying that the S3 i/c isn't an excellent mod, but only that JKM's logs (no, they haven't removed the stock i/c for tests - TT please note) are not indicating any issues with my stock i/c.
To feel the difference on road rather than track, Joe, I reckon you must be driving your car like you stole her - But I suggest that without the experience of driving one myself.
Whereas JKM would of course like the extra business of installing a S3 i/c, all their logging etc on my car suggests that unless I was doing trackdays, my stock i/c is doing its job, and though a great mod, it's not one I need at present.
:happy2:
KO4 would need relocation of DV + new discharge pipe but theoretically it should work as long as you limit the boost, but then you wouldn't be running K04 specific software so it wont try and hold the boost for that long anyway.
....Surely fitting a K04 without the rest of the package would result in turbo lag. It's swings vs roundabouts (assuming you know the expression).
Need I remind anyone that the whole package costs £4K.
Sorry Robin, I'm not trying to start a slanging match or anything. :smiley:
But I feel like sh!t today, and am trying to offer my advice, and perhaps I misunderstood what you said about JKM. However, I do feel they are wrong to state that a standard GTI cooler is satisfactory when compared against the level of modifications of your own red beast.
Peace. :smiley: :grouphug:
KO4 would need relocation of DV + new discharge pipe but theoretically it should work as long as you limit the boost, but then you wouldn't be running K04 specific software so it wont try and hold the boost for that long anyway.
....Surely fitting a K04 without the rest of the package would result in turbo lag. It's swings vs roundabouts (assuming you know the expression).
On a standard car, maybe. Comparing a standard K03 to a standard K04, then the K03 can provide peak boost from about 1750rpms, whereas the K04 peaks from around 2250rpms. But with a remap, you should be able to negate some of the lag.
Need I remind anyone that the whole package costs £4K.
Where does the £4k come from?
Besides, I wanna upgrade my big desktop Mac system and buy my daughter a MacBook Pro laptop for Uni.
Robin, sorry to hear it doesn't seem to be a simple fix :sad:
Draw out the positive and bung in the K04 :happy2:
Robin, sorry to hear it doesn't seem to be a simple fix :sad:
Draw out the positive and bung in the K04 :happy2:
....Hurdy!! WTF are YOU doing here! Feck Off! and stop being a bad influence! :grin: :laugh: :P
:happy2:
speaking of this, where Phylis :laugh:Robin, sorry to hear it doesn't seem to be a simple fix :sad:
Draw out the positive and bung in the K04 :happy2:
....Hurdy!! WTF are YOU doing here! Feck Off! and stop being a bad influence! :grin: :laugh: :P
:happy2:
Remember....Jesus says...MODIFY IT! :evilgrin: :evilgrin: :evilgrin: :evilgrin: :evilgrin:
speaking of this, where Phylis :laugh:He's probably off on a DD rolling road.... :grin:
....
No, you're wrong on this occasion - The negatives outweigh the positives - For me personally, you understand, and not for others.
....
I was expecting the K04 mallet. I actually said to a friend (forgotten who!) that lots of people would be suggesting the K04 when I started this thread. I understand the reasoning and the quest for bhp, but....
:happy2:
....
Perfectly described, TT - "low down driveability" is highly desirable in the UK with all the feckin speed limits. Besides, even on the occasional forays into Europe, a well modded K03 GTI is quite respectable.
A good friend of mine drove his very highly modded 290 bhp Mk5 GTI (K04 and Quaife etc etc) to the Spanish GP and then found some nice mountain twisties etc. But he ate a set of front tyres in just a few weeks!!
After asking why I didn't consider a K04 but understanding my reasoning, he also said that a K03 turbo wouldn't be run in until about 8,000 miles [cue for TT to spit and splutter his disagreement] so the option I was taking was a good one, also taking into account hire car costs.
....
Thanks, Tom.
I think that the actuator is integrated in the K03/K04 turbo, or at least can't be inspected separately. I stand to be corrected.
sibart, not wanting to drag the thread off topic too much but did you go for the full K04 upgrade package?Had the milltek fitted and stg1 Revo within 100 miles, then got talked into the K04 a short while after.
....: Yea she did, hope you dont mind. :happy2:
Hi sibart! This is a surprise! Did Kate point you in this direction?
I know you are extremely happy with your K04 upgrade and I can well understand why. However, as I've written in some length in earlier posts in this thread, I personally don't want such FWD power.
....: Yea she did, hope you dont mind. :happy2:
Hi sibart! This is a surprise! Did Kate point you in this direction?
I know you are extremely happy with your K04 upgrade and I can well understand why. However, as I've written in some length in earlier posts in this thread, I personally don't want such FWD power.
: Its very forgiving to drive, still on my second set of tyres, 30k miles and increasing :grin:, like i said I'll try and catch up with you guys at a meet at sometime
Wecome on here Sibart good input,
Ps if you are that easily persuaded can i talk you into swapping back to a KO3 with me. :wink:
:signLOL: Thats one reason why i spent the money. She is now Ex missus
....
So apart from a particular K03, we have something else in common! I too have been there and got the T-shirt and now the car! :grin:
:happy2:
:grin: :grin: :grin:Yes mate, Koni FSD,Eibach Springs and anti-roll bars. The brakes uprated using R32 / S3 OEM fronts, all of which fitted by JKM whom i reccomend whole heartly
welcome sibart, did you also upgrade the brakes and susspension? :smiley:
....
Thanks for the good wishes, guys :happy2:
JKM removed and inspected my turbo and, as suspected, the casing around the 'Penny Valve' Wastegate has a small crack. When I was chatting with VW Racing about my problem yesterday, they said it was probably Wastegate area or Penny Valve as JKM had exhaustively tested other possibilities.
....
Thanks for the good wishes, guys :happy2:
JKM removed and inspected my turbo and, as suspected, the casing around the 'Penny Valve' Wastegate has a small crack. When I was chatting with VW Racing about my problem yesterday, they said it was probably Wastegate area or Penny Valve as JKM had exhaustively tested other possibilities.
I'll post pics at the weekend - Am off to APS tomorrow.
My original turbo is a Rev C, whereas my 'new' one is Rev G but there's no obviously visible difference!
Instead of trying so hard to meet boost requests that we were seeing >90% effort in the data logs, we are now seeing as little as 65% and mostly in the 70's - So now there's plenty headroom (tolerance).
JKM also set my Revo to Boost 6 instead of 7. It'll run 7 fine but we decided 6 just as an extra margin of safety.
So initially she making just over 240 bhp with a very healthy torque curve but we need to let the whole ECU learn the new setup and settle before another dyno session.
The dyno has been invaluable as a tool for assessment and diagnosis and then checking everything afterwards. Jim did some road testing with the laptop as well.
JKM are a great team - Jim is the mechanical expert and Keith the electronics expert and they specialise in VAG cars.
The probable cause of the crack is heat - Turbo's are subjected to extremely high temperatures - And a weakness in the metal casing. At first it's easy to regret that it didn't happen while still under warranty but I doubt very much if VW would have accepted my issue with my other modifications being present. There have been cases of metal failure in the K03 turbo on standard 2.0T FSI engines, so it's not a problem exclusive to remapped engines.
It's great to have that extra power back!
As daft as this sounds that's good news isn't it? At least you now know whats involved and how much it will cost.......
P.S. I bet you enjoyed the drive today, the weather was 8)
Do you think this could happen to our k04 brothers as well RR?
Hi all,
I'm the doner of the turbo for Red's motor (hope all goes well). The K04 debate has raised some interesting opinions on Briskoda.net for sure.
My personal opinion is without doubt AMAZING. The drive you get i feel is superb, bearing in mind I do at least 1000 miles a week.
I'll be keeping my eyes open on the forum for any future meets to try and make a presence so some of you guys can take a test drive.
Hope you dont mind me crashing on here in my VRs.
And again, hope it all goes well Red.
Congrats Robin , glad its running back to good health :drinking: Nothing more depressing when somethings wrong and you can't rectify it.
Must have had a grin on the way home !
Also thanks for letting us know what went wrong, as that really helps the community if someone else has a similar problem they'll be able to sort it out much easier ! :happy2:
Ps: i had my car sorted, nothing wrong just a faulty steering wheel and reset adaptation, feels like it did before !
Good to hear you're all sorted now and sounds like you are one very happy bunny.
Once again JKM pulled out the stops for you and came up trumps :happy2:
Nice 1 RR, glad everythings sorted pal.
I've heard of turbo casings cracking before, not on the Tfsi as such, but it is fairly common on Cosworths etc
Glad to hear youre all sorted Robin :happy2:
Echo your statement on the JKM team
great info RR , good to hear its back to rude health. :jumpmove:
Th fact it could happen to any of us is a bit :surprised:
Great to hear that Red.
Are the revision G turbo's less prone to this cracking, do you know? As you have got me slightly worried with my Stage 2 now!
Keith also set my boost to 6 - but that was for fuel pressure reasons.
Nice one, although I sort knew from what went on prior to this I was expecting it to be a turbo related issue .. unfortunatley!!
Be nice to see pics of the fault unit - just to see exactly which bit went wrong.
Suppose the weather doesnt help but does it feel any better now?
Would you consider selling your old turbo ... wonder how much a recon would be ...
Edit: Also be useful to see your logs - boost graphs etc to see the difference now I assume it meets requested.
I'm not having any fuel pressure problems as such but my dyno plot is showing a very slight dip which would be got rid of if the APR fuel pump was installed - So it's very likely my next mod. It would just help everything run better and with less demand.Interesting to note that on one hand VW Racing who you seem to have great faith in don't recommend an uprated HPFP whilst JMK are trying to sell you one because of a slight power dip that you probably don't even appreciate when driving.
I'm not having any fuel pressure problems as such but my dyno plot is showing a very slight dip which would be got rid of if the APR fuel pump was installed - So it's very likely my next mod. It would just help everything run better and with less demand.Interesting to note that on one hand VW Racing who you seem to have great faith in don't recommend an uprated HPFP whilst JMK are trying to sell you one because of a slight power dip that you probably don't even appreciate when driving.
Decisions, decisions...
I'm not having any fuel pressure problems as such but my dyno plot is showing a very slight dip which would be got rid of if the APR fuel pump was installed - So it's very likely my next mod. It would just help everything run better and with less demand.Interesting to note that on one hand VW Racing who you seem to have great faith in don't recommend an uprated HPFP whilst JMK are trying to sell you one because of a slight power dip that you probably don't even appreciate when driving.
Decisions, decisions...
The standard fuel pump cant cope with the extra fueling requirements of the stage 2 map, which results in falling fuel pressure, which again will result in a misfire as pressure falls further. He would notice the misfire no doubt.
The standard fuel pump cant cope with the extra fueling requirements of the stage 2 map, which results in falling fuel pressure, which again will result in a misfire as pressure falls further. He would notice the misfire no doubt.
....Not necessarily as I understand it. It will depend on the settings (boost, I believe) in the Stage2 map.
For example, B7 and higher may induce the problem more than B6.
JKM data logged mine to check that very point and I'm okay on B6 - At least at present.
....
I forgot to add that VWR's GTI's don't run above 250 bhp IIRC.
Shouldn't we be splitting this thread off into the different subject of Fuel Pump?
RR can I suggest that before you embark on the upgraded HPFP route, you first find out what version cam you presently have i.e. type A or B. The earlier A type is known to suffer with premature wearing of the fuel pump lobes and that may be exacerbated by the higher loads that an uprated pump puts on the cam.
The cost for a replacement cam can be quite pricey when labour for fitting is included.
The A cams have softer fuel pump lobes and tended to wear more quickly than originally anticipated even when the fuel pump cam lobe follower was in good condition. This could occur with the standard pump.
....That sounds like an extremely sensible thing to do!!
Is this anything to do with what's called "cam followers"?
RR I think you will have the AXX engine like myself. Which is what is fitted to the early GTI's. I took out my HPFP about a month ago to have a look at the follower and cam lobe. Everything was fine and showing no sign of wear. As for which cam, I have the 2 piece cam fitted.
Which means it has the hardened lobe on which the follower and HPFP runs on. Yours should be the same. :happy2:
Oh my engine has 67k on it and has been running APR stage 2 for 45K
Have a look at this
http://forums.vwvortex.com/zerothread?id=3754451
The A cams have softer fuel pump lobes and tended to wear more quickly than originally anticipated even when the fuel pump cam lobe follower was in good condition. This could occur with the standard pump.
VW recognised this "deficency" and updated the cam to version B on later cars that is less prone to premature wear. I think they also altered the hardened coating on the surface of the fuel pump cam follower to compliment this change.
The fact that you have one of the earlier cars prompted me to alert you to a potentially costly upgrade in the short to medium term should you go with the upgraded pump and find that your cam has worn prematurely.
Regarding your turbo I meant if you sold as-is and then someone else then got it refurbed .. but like you say it might not be much different that getting an exchange unit from VW - hopefully the let you do an advance exchange. Also again like you said warranty might not count :wink:
RR I think you will have the AXX engine like myself. Which is what is fitted to the early GTI's. I took out my HPFP about a month ago to have a look at the follower and cam lobe. Everything was fine and showing no sign of wear. As for which cam, I have the 2 piece cam fitted.
Which means it has the hardened lobe on which the follower and HPFP runs on. Yours should be the same. :happy2:
Oh my engine has 67k on it and has been running APR stage 2 for 45K
Have a look at this
http://forums.vwvortex.com/zerothread?id=3754451
....Ah! That's good news - Thanks ukdub :happy2: My VW dealer has already checked my follower and cam lobe when there was first news of that recall on the subject. Yes I am AXX - 06-Build in July 05.The A cams have softer fuel pump lobes and tended to wear more quickly than originally anticipated even when the fuel pump cam lobe follower was in good condition. This could occur with the standard pump.
VW recognised this "deficency" and updated the cam to version B on later cars that is less prone to premature wear. I think they also altered the hardened coating on the surface of the fuel pump cam follower to compliment this change.
The fact that you have one of the earlier cars prompted me to alert you to a potentially costly upgrade in the short to medium term should you go with the upgraded pump and find that your cam has worn prematurely.
....Am I right in understanding that you and ukdub are talking about the same thing?
[As SteveP will confirm, I'm not even capable of removing my stock engine cover!]
Thanks :happy2:
It seems Robin cant find his crack.... :innocent: :rolleye:I thought he gave up such things a long time ago... :grin:
It seems Robin cant find his crack.... :innocent: :rolleye:I thought he gave up such things a long time ago... :grin:
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi22.photobucket.com%2Falbums%2Fb308%2FRedRobin_05%2FPioneerChav.jpg&hash=58bb5c46a2762db3dcbd1e5d666414f6930f9627)
Wasn't he just pointing to his latest K03 turbo in the pic above?? :laugh:
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi22.photobucket.com%2Falbums%2Fb308%2FRedRobin_05%2FPioneerChav.jpg&hash=58bb5c46a2762db3dcbd1e5d666414f6930f9627)
awesome pic ! :grin:
Daddy cool! 8) :grin:
hey robin, glad its back to full power. does it feel quicker? i wonder if any other KO3's have this problem if they are running higher boost :scared:
How much was the Turbo unit RR ?
How much was the Turbo unit RR ?
....[where's the smilie for "please read the feckin thread!"]
As I posted earlier, I paid £400 for a hardly used one (less than 4k miles) from sibart who upgraded early to a K04.
It'll cost you £650 to swop yours with one from VW, or approx £1,000 to buy new(?) outright.
If your car is modded with exhaust etc, the 2-year VW warranty will be meaningless.
I'm gonna be posting a new topic in Troubleshooting with it all concisely presented and some more pics ofhot girliesinteresting bits of metal.
Thanks, and sorry i didnt read the whole thread but i am at work and limited to how much i can view without getting busted :laugh: