GolfGTIforum.co.uk
Model specific boards => Golf mk5 => Topic started by: grcmoto on 03 December 2008, 14:09
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Hi all, i hope somebody can help, i havent long had the car and had it mapped soon after. Its been roughly a month since mapping it and ive found myself with a problem...
Running round town on light throttle is fine i can feel the turbo working but if i accelerate hard i can feel it come on boost but as its starts to hit full boost it goes very flat, will still accelerate just not very fast.. I had it on vag com and it brought up a fault which a friend diagnosed it to be a boost leak??
Are there any common parts of the boost circuit to let go like this?
Thank you
Andy
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What map have you had? Revo, APR, other? Normally the Diverter Valve goes - I had a Forge Stainless Steel valve at around £130 incl VAT - put in when I had a Stage 1 Revo.
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As Illyun says, likely to be the Diverter Valve.
Could also be the PCV Valve.
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Thank you very much guys, i have it Bluefin'd (superchips). Do you have any experience in tuning these engines? I just have the map and a carbonio intake and at a guess it is producing around 250bhp, which is great, but i have seen a few with 300bhp and they look awesome... What would be the next stage?
Oh and sorry but could i ask what a pcv valve is??
Thank you very much
Andy
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Oh and sorry but could i ask what a pcv valve is??
Yeah, I'd like to know too :embarassed:
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Can you get the fault codes that vagcom brought up? Would be easier to pinpoint then.
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Thank you very much guys, i have it Bluefin'd (superchips). Do you have any experience in tuning these engines? I just have the map and a carbonio intake and at a guess it is producing around 250bhp, which is great, but i have seen a few with 300bhp and they look awesome... What would be the next stage?
it seems like you have a std GTI K03, 300bhp is usually an ED30 K04, unless you want to fork out a fortune you wont be gettin much more than what you have BHP wise.
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Ah ok thank you. Can anybody help me with locating the diverter valve, i'm having a look myself but having no luck?
Cheers guys
Andy
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http://www.golfgtiforum.co.uk/index.php?topic=87420.10
look at Hurdy's reply at the bottom of the page and it has a link to the Forge website where it explains the fitting/ removal for ya :afro:
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http://www.golfgtiforum.co.uk/index.php?topic=87420.10
look at Hurdy's reply at the bottom of the page and it has a link to the Forge website where it explains the fitting/ removal for ya :afro:
That diagram / fitting guide is for ED30 engines, where the DV valve is fitted at the front of the engine bay.
If the OP has a regular GTI, then it will be kind of at the bottom of the engine near the turbo..
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Just posting to subscribe to this thread in case I can be of help - I had a boost leak due to a cracked wastegate. But let's cross that bridge if and when we come to it.
Check out the DV and PCV first.
:afro:
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Robin,
Did JKM take a pic of the cracked wastegate?? Have you just got them to replace that part or have you said sod it bung the K04 on there while the turbo is off? :drool:
I'm surprised the wastegate has cracked tho. didn't think stage 1 or 2 remap was running it that hard!
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Robin,
Did JKM take a pic of the cracked wastegate?? Have you just got them to replace that part or have you said sod it bung the K04 on there while the turbo is off? :drool:
I'm surprised the wastegate has cracked tho. didn't think stage 1 or 2 remap was running it that hard!
....Hi Chungster,
I don't want to hijack this thread by going into detail here. I've written an extensive report on the other GTI forum: http://www.mk5golfgti.co.uk/forum/index.php?topic=493.0 - I hope that it's acceptable to post this link to another forum for the purposes of helpful information.
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cheers for that RR...always good to know stuff like that!
glad the car is back to full health!
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To check the DV on a K03 turbo you'll need to access it from under the car. Three allen bolts hold it in place.
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I'd be 90% sure it's the diverter valve. It's proper name is the cut-off valve. Go to your local dealer and order part number 06f 145 710 g. Older cars have the 06f 145 710 b. This was a weakness which suffers with the increase in boost from the remap. Personally I would get a mechanic to fit it. Don't starting f**ing around allen keys or you could do more harm than good. The part itself is about £30 and fitting another £30. You can get the forge one if you prefer but personally I don't think it is necessary.
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Thank you all very much for some great help it is much appreciated!!
I'll get it looked at and let you all know what the problem was..
Thanks again
Andy
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If its mapped Id suggest getting the Forge one: http://www.forgemotorsport.co.uk/content.asp?inc=product&cat=260303DV&product=FMFSITV
Getting mine along with the map next week to avoid this situation in the first place.