I am considering replacing (eliminating) the resonator from the OEM exhaust system. I don't know if anyone has done this and can post a sound bite so that I can hear what it would sound like. I replaced the exhaust system on my 4Runner last year with a Magnaflow cat back exhaust system and absolutely hated it...too loud and it sounded like an old pickup truck. I hated the sound so much that I eventually (within a few months) traded it in on the Atlas. I am looking for a little rumble, not a roar.