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hi guys, i just got my car back from the pannel beaters.

It was there for 6 weeks, needed a new front bar and steering rack. insurance fu*kers were really slow in processing the claim.

anyway i had it tuned with pfc about 5 monthes ago and was fine when it went in but now when i try to hit full boost it sounds like there is a muffled putting noise out of the exhaust and it doesnt hit boost. it idels ok and runs fine on no boost.

i was thinking it may be old petrol so i filled the whole tank with new petrol....no difference. Could it be spark plugs or injectors???

i have no idea and am taking it back there tomorrow but would like to have an idea of what it may be.

sorrry for the novel above.......

any help would be great handyandy

Edited by handyandy
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It was there for 6 weeks, needed a new front bar and steering rack. insurance fu*kers were really slow in processing the claim.

anyway i had it tuned with pfc about 5 monthes ago and was fine when it went in but now when i try to hit full boost it sounds like there is a muffled putting noise out of the exhaust and it doesnt hit boost. it idels ok and runs fine on no boost.

i was thinking it may be old petrol so i filled the whole tank with new petrol....no difference.  Could it be spark plugs or injectors???

i have no idea and am taking it back there tomorrow but would like to have an idea of what it may be.

sorrry for the novel above.......

Well - if it was my car, the first thing I would be looking at would be the intercooler piping.

If its fine off boost, but starting running rough and not boosting when you'd normally hit boost - it implies the turbo is sucking air in through the air flow meter, so while the tune might not be perfect it would suffice as the car is more or less running naturally aspirated. When the turbo has reached the point its sucking in enough air to make boost, the engine will still be drawing in atmospheric pressure and will start overfuelling and retarding.

I hope this is the problem, as it will just be a pain in the arse :P

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hi guys, yeah it gets to about 5 psi and is sometimes ok there but when i try to hit 10 it stutters. the usual turbos noises are there. I have just tightened all the cooler clamps and will put the hand cont in and go for a test drive.

fingers crossed

thanks for the help

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