This thing is LOUD!!! Sounds exactly like a Dynomax ultraflow catback, straight thru muffs & all. It sounds cool the way it is ( i like loud stuff), but it might be a little too loud when i get the offorad and longtubes on... still 100 times better than stock!!! If its too loud when i get the rest of the system on, then im going to change to a set of Spintech muffs... i LOVE the way those sound...