I am very happy with the way this exaust system sounds. I noticed a slight difference in performance and was a little more noticeable after putting a K&N panel filter in. I have 2 complaints about this system though, When I first recieved the exhaust and installed it there was a clamp missing so i couldn't put one tip on and I had no choice but to drive it home and it ended up melting my bumper and I had to get it repaired because the paint started to crack and peel. I think with the price and quality of this product that should of never happened but I do understand that nothings perfect and it can happen. The other comlaint is that the system does not fit right. I cut the exhaust at 20 inches from the front of the catalytic converter flange and its sitting back too far. The rear mounts are almost horozontal and the rear muffler bracket hits the body on bumps. :ill: I want to call Corsa soon to talk about the fitment problem because it seems like the pipes are the wrong length.