Quote Originally Posted by 0rion View Post
that's what I'm saying. The sound/performance difference between just mufflers and a whole catback would be minimal unless you went to a 3" catback. I know GM likes to crush and kink factory exhaust pipe for fitment where the aftermarket stuff doesn't. There would be a little gain there I'm sure but probably not a ton. The 05-06 got it worse than the 04's did. The 04's got those retarded ass mid pipes that point inward instead of going straight back.
"SPINTECH" PRO-STREET & SUPER PRO STREET PERFORMANCE MUFFLER

Which are louder and better???