Performance intake/exhaust systems will increase horsepower by upgrading your engine air flow for a better response, faster airflow, and an overall healthier sound. The high flow of the M-Performance test pipe hails from precision mandrel bending pipe of 100% polished stainless steel. The test eliminates unnecessary back pressure, frees-up flow and promotes power though bypassing the catalytic converter. Ideal for off-road racing, this test pipe delivers the maximum horsepower boost to the wheel.