I recently put on a nameless muffler delete. The previous owner took out the resonator too. I'm still stage 1 though so I still have my cat in there. The thing is loud as ****. I like it, but I'm going to have to put a resonator in the midpipe again for 2 reasons. 1. I live in a cop heavy neighborhood that have nothing better to do than write tickets. 2. The drone is killer. I can't go down the highway without having to raise my voice in a conversation.