HEY WHAT'S UP? COBALT SS #1 I just bought a white 4dr SS not supercharged, too bad, I was thinking about putting that exhast in with the GM cold air intake kit,now 2 opinions I think it's more quiet than the stock exhaust and am not very happy with the sound but I just wanna know has the exhaust improved the performace or is it the same? just asking you guys opinion on this. Thank You Vinnie F