I am practically even with an LS1 with Intake/Exhaust. Ive beaten Mistuishi Evos from a stop
Who are you racing, i love the cobalt but an evo and anything with an ls1 are going to cook you, and an exhaust and intake is a laughing stock to be honest. Kid if you want to tune a car stay away from american 4 bangers, not worth the money for the power. Go get your self a nice v8 throw a cam in, intake manifold, and some headers and crack on slowbalts every day. I drive a cobalt so you cant say im wrong