If you want more power and significantly less noise while still maintaining a mellow deep tone look no farther. The Flowmaster 50 Series Mufflers are designed for use on both street and strip vehicles. Angled baffles built into the muffler case are used to cancel sound waves produced in the exhaust. Doing so elevates both fuel economy and horsepower. The Flowmaster 50 Series also sports a special resonant tuning chamber, which makes the mufflers significantly quieter than the Flowmaster 40 Series, while still offering comparable performance.