i was a little skepticale about this muffler performing as advertised. after all, it's basically a muffler with a 4 inch pipe through it with a few openings at one end. well, got it mounted up today and WOW! sounds sweet at idle, but on the highway, its quiet as stock! if any of you are looking to upgrade their exhaust but keep it quiet, this is the muffler for you! thanks Betterthanstock!