Aftermarket custom cat back exhaust systems increase the efficiency of an exhaust system because of the mandrel-bent turns and reduction in back pressure. They are the popular choice when it comes to aftermarket exhaust systems as they offer reliable performance and sound without having to buy a new catalytic converter. They are also well-suited to those who like to handle their own installation!
Most designs of the time therefore included secondary air injection, which injected air into the exhaust stream. This increased the available oxygen, allowing the catalyst to function as intended. Cat-back exhaust systems replace every component behind the catalytic converter, including most piping, mufflers, resonators, and tailpipes.
Adding a dual exhaust to your vehicle can have a number of advantages. Functionally, two exhausts can improve engine performance and reduce emissions. Aesthetically, it has the sporty look that some people search for in a vehicle. Catalytic converters require a temperature of 400