Looking to buy new mufflers and was wondering if SXP are as good as they say they are. I talked to them and they said they are better than Flowmaster. They have a double layered neck and something about some kind of heat treated paint that protects it from rust and it's a 2 chamber. Also says better mpg more hp and more trq. Also a deep muscle growl. So I was just wondering if anyone has heard anything about them or even used em. Im currently running with no mufflers bc mine were shot. So i have no cats and no mufflers now. It sounds like a stock car and everyone looks when i get on it. Id love to keep it this way but for one i dont want to get in trouble and two my gas milage has gotten a lot worse. It was 14 and id fill up once a week. No i cand watch the needle move. Is that normal when you run straight pipes? Thanks so much.