Cat back exhaust systems are a great way to enhance the performance and look of your vehicle without having to take out a small loan. An average exhaust will start at around $300 and can go up to anywhere around $3000. You will be able to find a cat back exhaust system for just about every make and model of a vehicle, and they are easy to install, making them great for people who love a bit of DIY.

To maintain catalyst efficiency, the air–fuel ratio must stay close to stoichiometric and not remain rich or lean for too long. All of Milltek’s performance exhaust systems are manufactured from T304L stainless-steel