The term cat back exhaust can be defined as the section of an exhaust system that attaches after the last catalytic converter in the system. A cat back exhaust is typically made up of a rear-pipe, a resonator and a muffler, but depending on the make and model, it can also include a mid-pipe, X-pipe, H-Pipe or a Y-Pipe. Adding an aftermarket cat back can provide several benefits, the first of which is more power.
