safety69 Posted May 22, 2009 Report Share Posted May 22, 2009 I have a 8L S3 BAM currently on 51k and I keep thinking something isn't right with the power. The revs seem to increase as they should driving enthusiastically, but the power doesn't seem to be as punchy and can be noticed on the odometer. I have had it rolling road tested and it produced 221bhp as it should, there are no fault codes present, the clutch seems to be working fine, the MAF is working and boost levels are fine. I have tested the power in various outside temperatures between 10 to 15 degrees. I am comparing to a friends TT 225ps also BAM and it does seem to have more punch, with the odometer readings being far better than mine. My car is still under an all component warranty only having purchased used from Audi last summer, but I'm not quite sure how they can diagnose what it could be seeing the readings seem to be correct. Could it be something mechanical? What else can I check? I have full used of Vag Com if this helps. Thank you. Link to comment Share on other sites More sharing options...
davidhodgkinson Posted May 22, 2009 Report Share Posted May 22, 2009 It sounds like the clutch is slipping. Link to comment Share on other sites More sharing options...
shark_90 Posted May 22, 2009 Report Share Posted May 22, 2009 Did you drive your friend's TT? I find that cars always feel faster from the passenger seat (my own car included). If everything comes out OK on a rolling road it does sound odd. It's probably worth checking the requested vs actual boost in VCDS to check they are relatively similar. Link to comment Share on other sites More sharing options...
Paul Posted May 23, 2009 Report Share Posted May 23, 2009 (edited) If a rolling road is showing the true output, then thats pretty convincing that it is. Unless something has failed since. Regarding your mates TT, i am with Shark on that, as passengers cars do feel alot quicker. But i would also add/ask does your friend 100% know his car has not been remappped by any previous owner? You may be comparing it to a remapped car unknowingly. As you know there is a massive tuning scene, and i would imagine alot of vehicles that get moved on with nothing said to the dealer or new owners. Edited May 23, 2009 by Paul Link to comment Share on other sites More sharing options...
safety69 Posted May 23, 2009 Author Report Share Posted May 23, 2009 Thanks for the replies. I agree that passenger rides do seem faster. I will go out today and log some boost values and return to this post. I don't imagine its the clutch slipping, the biting point is spot on and I've not smelt any burning since I have had it, but I won't rule this out. Link to comment Share on other sites More sharing options...
safety69 Posted May 27, 2009 Author Report Share Posted May 27, 2009 okay, I have tried logging boost using engine block 115. Reading through various ways of testing they say the 3rd and 4th column should read "requested" and "actual" for the boost readings. However, both columns on my screen read "absolute" pressure, with the 3rd column reading 1010mbar and the 4th reading 1020 at idle. Is this right for idle? I then tried logging with no joy, I think I didn't hit the stop button in time and its only recorded at 3440 rpm. The readings at this rpm in column 3 is 1010mbar and column 4 is 1280mbar. I am very confused why the requested value is so low and why it isn't changing. Are the results indicating something wrong? I am running standard mapping with a forge DV. Any help much appreciated. Link to comment Share on other sites More sharing options...
toby a3 quattro Posted June 7, 2009 Report Share Posted June 7, 2009 Hello, it may be the case of youve got used to the power of the car, ive just got an audi a3 and i thought it was slower than normal..untill i got in the passenger seat and let my uncle drive it, it may be worth you being a passeneger in your own car and see if they think its loosing power and that if still feel the powers lost. If that make sense. Link to comment Share on other sites More sharing options...
shark_90 Posted June 7, 2009 Report Share Posted June 7, 2009 okay, I have tried logging boost using engine block 115. Reading through various ways of testing they say the 3rd and 4th column should read "requested" and "actual" for the boost readings. However, both columns on my screen read "absolute" pressure, with the 3rd column reading 1010mbar and the 4th reading 1020 at idle. Is this right for idle? I then tried logging with no joy, I think I didn't hit the stop button in time and its only recorded at 3440 rpm. The readings at this rpm in column 3 is 1010mbar and column 4 is 1280mbar. I am very confused why the requested value is so low and why it isn't changing. Are the results indicating something wrong? I am running standard mapping with a forge DV. Any help much appreciated. Do you have the log file available? Link to comment Share on other sites More sharing options...
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