Shane, Jordan guys jump in here on this. I frequent another (Mini only) forum and one of the members is claiming to have a Cobalt SS with 337whp/373wtq boosting 23psi. Are these realistic numbers? I find it hard to achive 23psi of boost without some serious octane help.

Before you ask I don't know what he has done to it, but he is a reputable person, and still works at GM as an engineer. I did notice aftermarket Injen intake and possibly downpipe.