Another difference is with the material used in the cat-back exhaust system against that in stock exhaust systems. But the problem with a resonator is that it can cause restriction to the flow of the exhausts. In the end, this can end up lowering your vehicle’s performance. It is also more affordable and easier to install than other types of exhaust systems, including the cat-back exhaust system. Cat-back and axle-back exhaust systems are both aftermarket exhaust systems. A performance exhaust system, like the cat-back exhaust, allows for easy splitting into dual exhaust.
Typically, that includes a mid-pipe, muffler, tailpipe and tips. Cat-backs generally yield increases in performance, due to the more efficient flow of exhaust through upgraded parts like larger diameter tubing and better flowing mufflers, as well as improved sound and reduced weight. For starters, the "cat" in catback exhaust system is short for "catalytic converter", a central part of your car’s emission control system, which cat back exhausts are fitted behind, hence the "back". This relatively simple mod helps to free up exhaust gas flow and improve the noise of your engine by swapping out part of your exhaust system with a specially designed