Not sure what size exhaust your vehicle needs? Learn how to choose the right diameter and what can go wrong if it's too big or too small.

Despite having port-matched Twisted Wedge heads andEdelbrock Performer 5.0 intake ... His exhaust consisted of the factory H-pipe (and its four,restrictive catalytic converters), 21/4-inch ...

Sound, performance, and style were the main factors that motivated Dan Adams to choose an MBRP Pro Series 4-inch after-cat exhaust for his '06 Dodge Ram 3500 with the 5.9L Cummins. Although Dan's ...