A cat-back exhaust system refers to the part of the exhaust system that is located behind the catalytic converter. This typically includes the pipe connecting the catalytic converter to the muffler, the muffler itself, and the tailpipe or exhaust tips. When used in the context of aftermarket parts or performance upgrades, "cat-back" indicates which section of the exhaust system the parts replace. Cat-back systems are available as both single- and dual-exhaust and are a relatively simple way to increase a vehicles power. These upgrades usually involve installing wider piping with fewer sharp or sudden bends to reduce backpressure, which is the pressure opposing the desired flow of exhaust gases. Reducing backpressure can lead to increased efficiency and ultimately an increase in horsepower. Cat-back exhaust upgrades can typically be swapped with the original exhaust without any modifications, and they include all the necessary parts for replacement. They are known to provide both aesthetic and performance improvements, making them a popular choice for car enthusiasts.
In summary, a cat-back exhaust system is an aftermarket upgrade that replaces the exhaust system components located behind the catalytic converter, providing benefits such as increased power, improved efficiency, and enhanced sound.
