Mac's Pro Chamber goes even further than traditional H and X pipes to produce more torque and horsepower by merging exhaust pulses in one area. Merging of all exhaust gases creates higher temperatures which creates a boost in exhaust velocity and forces exhaust gas to see both outlets. Your exhaust will think it's a 180 degree tuned header!

Made from 2.5 inch stainless steel for long life. Requires cutting of original exhaust behind the factory catalytic converters, but an easy install. Best of all, because you keep your catalytic converters in place, you are 50 State Legal! Installs on factory hangers and works with stock extension pipes.

For 2005 and newer Mustang GT with 4.6L 3V engine.