Cat-back exhaust refers to any part of the exhaust system that’s behind the catalytic converter. Typically, this includes the pipe connecting the pipe from the catalytic converter to the muffler, the muffler, and the tailpipe or exhaust tips. Cat-back systems are available as both single- and 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.

A cat-back exhaust system is a modification in the exhaust pipe to improve airflow. The system runs from the tip of the exhaust to the catalytic part of the system. The cat-back system comprises a pipe connecting the muffler to the catalytic converter, and the exhaust tip.

Adding an aftermarket cat back exhaust can provide several benefits, the first of which is more power. If the stock cat’s can flow a large amount of exhaust gas with creating too much restriction, then a cat back exhaust system should offer a nice increase in power.

The Most You Can Gain is 2-5% If you want to know how much power you can expect to gain from adding an exhaust system to your car, assume that your engine will get 2-5% more powerful. More specifically, large engines like a big 6.0L V8 typically see about a 2%-3% horsepower increase.

A cat-back exhaust system replaces your OEM system from the catalytic converters and back. The pipes are larger. The mufflers are also designed to facilitate a more efficient draining of the exhaust. Cat-back exhaust systems improve gas mileage and enhance engine sound as well.

Does having no muffler affect gas mileage? Yes No Muffler will kill your gas mileage. You would think, free flow so more hp and better mileage.

The Toxic Exhaust The possibility of toxic exhaust fumes leaking into your car’s ventilation system represents the largest reason for not driving with a broken or damaged muffler. Even without an exhaust leak, the carbon monoxide your muffler typically spews out and away from your vehicle may rise and enter your car.

Mufflers’ Effect on Performance A muffler’s primary role is to reduce sound, but it can also play a role in your car’s overall performance. By their nature, mufflers restrict exhaust flow or create back pressure, which slightly slows down your engine.

Improved performance – a muffler delete can significantly improve the car’s exhaust flow, thus increasing the horsepower delivered by the car’s engine; A great, roaring sound – if you like the loud roar of a powerful engine, you can get it with a muffler delete.