I got my pipes replaced with 3" straight pipes from the cats on back. It sounds amazing with a tiny tiny bit of drone, with my music on volume 14 I cant even notice it. However I do not like the raspy noise when i get on it, I am researching options for some mufflers and/or resonators I can add without taking away my idle sound. I have heard good things from SLP, and Porters. Considering I only paid $350 for everything so far I cannot complain. I refuse to pay $1500 or more for an exhaust system even if they claim to give me 15 HP. I don't plan on becoming a drag champ anytime soon. Just my opinion, hate it or love it either way its what you like in the end that matters. Your car, your payments.