On the rollers at Performance Associates in San Dimas, California, the 383-cubic-inch small-block-powered Chevelle picked up a ton of power with Flow-master's new exhaust collector. Just when you ...

A new pipe is high up on most owners’ list of desired modifications. Swapping exhausts is usually pretty easy, but the job will vary based on the style of bike and the number/layout of the cylinders.

What are exhaust headers? How does an exhaust header increase horsepower? What's the difference between a 4-2-1 header vs 4-1 header? This video explains how exhaust headers are used as a portion of ...