What exactly does a resonator do? I have a camed/supercharged 3800 with slp headers and slp catback with no resonator or catalytic converter I do know what you mean you can't get it to sound like a v8 but it sounds good it has a deeper rumble to it. It does have a raspy sound when you get on it and let off quick or rev it real high not under load but it's a v6 I've come to the conclusion that there is nothing I can do about it.