I'm fairly new to this forum and have a few questions that you may be able to help with...
I have a 1999 S3 with 130000 miles on the clock, according to all the paperwork i got with the car the engine head was replaced with a re-con unit at 97000 miles, dont know why, i assumed a head gasket failure etc.
1) I was thinking of having the ECU re-mapped, is this a good idea on an engine with this many miles and who would be the best company to go for, are the gains to 260bhp i've heard about realistic?
2) There is a bit more noise than i expected to hear coming from the engine, it sounds very slightly 'tappity' is there anything i can get to cure this i.e. some sort of additive, which would be the best one?
3) The exhaust also seems to be blowing, can this cause power loss? I was thinking along the lines of back pressure loss for the turbo. Was thinking of replacing it with a full stainless system; any reccomendations?
Thank you all for any help and answers you can give me, look forward to your replies.