Reduce back-pressure by replacing the restrictive catalytic converter in the factory downpipe with a Performance high flow race cat. The high flow 200 cell race cat results in a faster spool,?an increase in power, as well as a more aggressive exhaust tone. VRSF offers high quality products at an exceptional value. This downpipe is handcrafted from SS304 grade stainless steel with smooth radius bends to decrease turbulence and flow.