Well its pretty loud, I took it on the freeway to see if there was any resonance in the cabin and its barely any at all and that was with the top off. At WOT it sounds amazing, the audio clips don't do it justice..I love it. At lower RPM's will cruising around town I can hear some resonance, but not too bad. So far I'm really happy with this exhaust. The fitment and the look is great. I also noticed it had two small holes on the tips on the bottom, prolly for a silencer? Didn't see one at daliracing.com ..wonder if I can get one to fit it? Hope this helps your decision making guys.