Fitting a cat-back exhaust is a quick, easy and cost-effective way of releasing more power from your car’s engine. This is due to the standard restrictive system being replaced with a more free-flowing system with a larger bore. Coupling this with a Decat Pipe (which replaces the standard restrictive catalytic converter with a single piece decat pipe) also allows for improved exhaust gas flow, increasing horsepower and improving throttle response in the process.