Street-car turbo people, this one's for you. 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 ...

This time on Engine Masters presented by Amsoil, we go head-to-head-to-head-to-head to find the best dual-plane for your buck. Using our longtime test mule 372 small-block Chevy, we bolt up the four ...