Cat-Back Exhaust System: A cat-back exhaust system replaces the piping from the catalytic converter back to the tailpipe, enhancing engine sound, appearance, and performance. By reducing exhaust backpressure with larger-diameter tubing and high-flow mufflers, these systems improve engine breathing, resulting in modest gains in horsepower and torque. The most noticeable change is the deep, aggressive exhaust note that adds excitement to acceleration. Systems are available in various sound levels—from mild to race-inspired—made from stainless or aluminized steel for durability. Tips add visual flair. Brands like Borla, MagnaFlow, and Flowmaster offer tuned designs for optimal flow and sound. A cat-back exhaust is a popular upgrade for drivers wanting a sportier feel and sound without major engine modifications.
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