You roll up to a stop sign and your chest tightens with dread. Whenever you accelerate, your engine sputters, backfires, and in general sounds horrible. Plus your car smells awful. All of these ...

The premise of the test was simple. First we'd select a test vehicle, then run all the mufflers on the chassis dyno to determine the horsepower output and back pressure of each set, and then test them ...

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 ...

If you belong to the camp of people who still believe that back pressure helps your Harley-Davidson, or any engine, for that matter, we hate to break it to you, but you're wrong. Ask any engineer, ...