No offense to owners of the Chevrolet Silverado and GMC Sierra Sierra equipped with the 5.3L L83 V8, but if you think those trucks sound good with an aftermarket exhaust setup, just wait until you ...

Put mufflers on a 1300hp big-block Chevy, and most enthusiasts would guarantee that you'd choke the horsepower down. But the test of Borla's new 4½-inch Shoot-Out Series muffler revealed that ...

These are the most common sizes and shapes of the XR-1 mufflers. The oval is the most popular for street cars because it doesn't hang down as far as the others and has more packing material. After all ...