Hello everyone I have learned a lot on this website about my car thanks to everyone out there. I have a muffler shop and I haven't touched my exhaust yet, lol. I really like quiet, but my magnaflo true X will be in today, and I'm going to put in place of the 2 rear cats. They do help a lot to savage the exhaust, now I might have a problem getting the full benefit from it with the 2 mufflers, but it sure won't hurt. Now I just need to know where to buy a Sprint booster???