Preparation for the STILLEN supercharger

Originally Posted by Kyle@STILLEN

When we do our testing it will be with the standard cats and exhaust manifolds. I'm sure we will develop the tune further with the headers and high flows but to start with we won't have that informaiton immediately available which is why we are recommending that no one modify those parts just yet.

Keep in mind if you plan on purchasing the CARB legal supercharger then replacing the cats could and most likely will cause the car to fail inspection.