This downpipe is very quiet and simply changes the tone of the exhaust to a deep, unobtrusive sound. Designed as a bolt on upgrade to the B&B cat-back, this downpipe is precision crafted using 3” CNC mandrel bent T304 stainless steel tubing and incorporates a 200 cell high-flow metal catalyst, reducing turbo lag, increasing spool and providing an increase in both horsepower and torque. Like all B&B products this down pipe is backed with their limited LIFETIME warranty.