What is a “cat-back” exhaust?
A cat-back exhaust refers to an exhaust system that has been completely replaced from the outlet of the catalytic converter by components able to flow more exhaust gas, which reduces backpressure. Oftentimes, the cat-back setup will include exhaust piping which is a size larger than stock (2.5″ diameter as opposed to 2.25″ for the factory exhaust). They also include high-flow performance mufflers (and resonators), with smooth Mandrel bends that minimize exhaust restriction.
