We all know that adding any sort of restrictor -- like a muffler -- is going to hurt power on a turbo motor. We also know that sometimes it just makes sanity-sense to cut down excess noise. The crew tries to find out just how much horsepower that sanity costs.

You've seen them, you've drooled over them, and you may have even run them. We dive into the wavy waters of individual runner systems, how you can tune them, and whether all that cool makes any more power than the stalwart carburetor.