The ractive I got was new, from a friend for a very cheap price. I installed it and ran without the silencer for a while. It droned a bit from 2500-4000rpm. however, below that it was fine and quiet, and above that it had avery serious sound to it, kinda like an Integra GSR with a good exhaust. There was a definite increase in power above 4000rpm. However, I put a silencer in, which took care of the drone and made the car almost quieter than stock. It also took away some of the noticeable power. I would recomend this muffler, so long as your exhaust isn't full of holes like mine is. Oh, on deceleration, it has that nice pop-crakily thing too.