The car is a 2000 wagon with a pretty extensive list of mods under the hood that i have been driving for a few weeks now. I had the boost turned down from 21 LBs to 15 LBs to mkae it a bit more of a daily driver and ended up gumming up the spark plugs a bit due to the a/f mixture, but the car was running excelent. So my easy out was to go for a tank with STP fuel injector cleaner in it which did not help at all and possibly made it worse. Now, if you step on the pedal the car goes to about 2k rpm and just sputters BAD, also has problems starting sometimes as well. If i ease onto the pedal i can achieve full boost, normal blow off and go all the way up to 7k rpm. Any ideas i could check into would be excelent, this audi belongs to a friend of mine and i have been driving it while he is without a license