Quote Originally Posted by blowfishRus6 View Post
read the KR stickey. the eaton puts in alot of hot air and adding a smaller pulley just increases the hot air. with the stock exhaust the hot air can not escape the engine thus causeing knock. when it knocks the computer pulls timing. pulled timing equals SLOWER car. there have been many of stories of pullied gtps losing to stock pullied gtps. ask bio about that one also ask bluegtp about the motors the zzp pcm blew..

Hmm didnt know these cars had that problem, I know my buddies 07 SC/Cobalt is runnin a 2.8 pulley with just full exhaust header and cat back and a tune, but I guess thats the newer technology for ya. Anyone got a link to those guys that have the good pcm's for the mods im doing? Ppl been mentioning overkill and Intense I think it was?