Asa Faircloth
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- Sep 30, 2016
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Hi all, had my s3 mapped and ever since i have had it mapped ive had a problem with the car to do with the power dropping off in higher gears the car pulls through 1st and second gear without a fault and in 3rd gear it will pull really good but at about 4thousand revs it sort of looses boost then re appears again after a very small period of time but its noticeable but in 4th 5th and 6th when putting my foot down the car feels as if it hits boost then after a second looses the boost and stays there without the boost coming back i would have said it is a boost leak so i changed the DV valve and had to change the ignition coils before that i then had the car smoke tested and there was a leak so i sorted the leak out but the problem still continues & i havent completely ruled the boost leak out as the smoke test only goes down the pipes at like 1-2 psi so its not going to put the same amount of pressure in there as the turbo is when i measured the car to see what was happening in 1st second and third i was pulling just over 26psi and when i planted my foot in 4th 5th and 6th i would hit around 16 psi then it would drop down to 15 and hold there anyone got any idea what this could be at all?