Roush has an off road exhaust system and a legal exhaust system. I know that the off road is louder but what makes it louder? Is it just the muffler or something else?
I have the legal kit and I want something louder. I was thinking about swapping the muffler with a flowmaster super 44, but should i just get a whole new set up
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.