When it comes to performance there is but one steadfast rule: All the good air that goes into making horsepower must eventually find its way out. This means that the addition of everything from ...

Ok, we've done header tests in the past, comparing various styles and sizes on moderate to high-powered street-style mills. In the case of the big-block Mopar, the default favorite tube size has long ...

There's been a lot written about optimizing header design, but most of us can't afford one-off, custom-built, ideal-for-the-combination headers. Realistically, we use what we can buy over the counter.

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 ...