CAT-BACK EXHAUSTS

What does a cat-back exhaust do? Why buy a cat-back exhaust?A performance cat-back exhaust system is used to increase horsepower for your car by allowing exhaust gases to pass through your exhaust system with less backpressure and less resistance. Larger-diameter piping is normally used, depending on the application, in order to gain more horsepower and torque levels throughout the power band. A