I have heard the Magnaflow 44s in an SRT8 Challenger and they sound great. The comment that concerns me more is the one from Rudy about the person who got "voided for a predator". Wow, thast scares me. I just reprogrammed mine with a Predator. I can quickly reload the factory tune but I want to know more. Did the guy take it to the dealer without reloading the factory tune or what?