The MagnaFlow 2006-2009 Audi A3 Quattro Sport Series Cat-Back Performance Exhaust System 15598 enhances your 3.2L 2006-2009 Audi A3 Quattro with an aggressive character that is sure to help you stand out from the other Audi A3 Quattro you encounter on the street. With its 2.5in. diameter fast-flowing mandrel bent main piping that passes through 2 Straight-Through mufflers before ending in a Dual Straight Driver Side Rear exit with 3.5in. Polished Welded-On Double Wall Angle Cut Folded Edge tips, this dyno-proven Audi A3 Quattro exhaust system refuses to be ignored. As such, 15598 is tuned to produce our powerful, resonant signature exhaust note at Aggressive exterior and Moderate interior sound levels, so please check to ensure compliance with local noise regulations. The system's cat-back design replaces all your import's stock exhaust components from the catalytic converter on back. Extensive 3D scanning and CNC precision robotic manufacturing techniques are used to ensure that your exhaust system fits perfectly with just a simple do-it-yourself installation process. The durable, corrosion resistant stainless steel construction of 15598 is backed by MagnaFlow's limited lifetime warranty.