A tuned length primary exhaust header pipe creates a rarefaction (negative low-pressure wave) that's reflected back up the pipe. On a standard header the negative wave occurs at the primary tube's ...

What goes in must come out. That's the whole premise behind an exhaust system. As with every other component on a high-performance vehicle,howyou accomplish the task can make a big difference in how ...

If you are serious about your all-motor power, then a custom header is going to be mandatory for your project vehicle. By this point your motor is built to the limit or near-limit. You have high ...