What is a “cat-back” exhaust system?
A cat-back exhaust system, now frequently known as an axle-back exhaust system, is an exhaust system from the outlet of the catalytic converter to the tip of the muffler. Cat-back exhaust systems are a very popular performance modification that gives a car generally 5-10 more horsepower respectively. Cat-back exhaust systems will have a deep sound. The loudness of the exhaust will vary depending on the mufflers installed on your Pontiac Grand Am. Most cat-back exhaust systems are full-featured kits including all the necessary parts and components to replace your entire exhaust system, including mufflers.
A. “Cat-back” is a term used to describe the part of the exhaust from the catalytic to the tailpipe. Which includes the pipes, muffler(s) and tailpipe/tip. In the case of the Focus, there is actually another piece pipe between the catalytic converter and the “cat-back”, which is called the flexpipe. The flexpipe is not part of the cat-back exhaust kits sold for the Focus. Q.
