ok i just got my ECu back from PCMSFORLESS thinking this would solve some of my problems but oh man was i wrong. My car at low RPMS jerks really fast unless i give it alot of gas.. i dont understand what is wrong with it this time. It runs alot better now tho but it still doesnt feel that fast... what is wrong with my car?? And oh yea one more thing, with all this **** where should i shift when im racing, at what RPM??