Dual Cat-Back Exhaust System

The Gibson Performance Exhaust 619003 is a dual cat-back exhaust system engineered for enhanced performance and sound. Constructed from durable T-409 stainless steel, this system is built to last. The muffler utilizes a baffled and chambered design, featuring directional louvered tuning ports and angular induction. This design aims to tune exhaust flow through resonance chambers, resulting in a deeper, more aggressive exhaust rumble without significant interior drone, as it contains no internal packing. This specific system is designed to fit the 1999-2004 Ford Mustang GT models equipped with the 4.6L engine. It is a direct bolt-on installation, simplifying the upgrade process. Gibson claims that this exhaust system can provide up to 10-20 more horsepower, 15-20 more ft-lbs of torque, and potentially improve MPG. These gains are most notable at low RPMs (1800 to 3000 RPM).