Earlier this month, I wrote about free-flowing air and how changing your muffler, moving to dual exhaust and adding a second air filter can help your engine gain turbo boost and, in turn, make your ...

Now that we have a better understanding of why headers work, the question now becomes do they work in the presence of boost? To find out, we decided to run a series of tests by comparing headers ...

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 ...