hey all my first time on here!!! ive just got a 2003 a4 190t quattro s line,now ive just found that the engine code on the head is amb (think as cant remember) anyhow it says on the cam cover in tipex 163 bhp a4 quattro!! new engine fitted!! it should have the bex code,now will this engine still produce 190 bhp as its the ecu that controls it or have i got a shed? please help as its doing my head in!! thanks