aFe 09-16 Audi A4/A5 (B8) L4-2.0L (t) Twisted Steel 3in. Downpipe – 304 Stainless w/ Cat

This system produced gains of up to +14 HP and +6 lbs. x Ft. TQ., as measured on our in-house dyno. This system is constructed of 3″ mandrel-bent 304 stainless steel tubing for maximum strength and durability. Includes a single high flow catalytic converter which is less restrictive than the factory converter providing maximum flow. Factory style laser cut stainless steel flanges are used used for a secure leak-free seal. This down pipe includes a 3rd O2 bung and plug for either a wide-band O2 gauge or auxiliary instrumentation. Utilizing a factory style hanger and flanges this system is designed to fit in the stock locations with no cutting or modifications required for a hassle-free installation. Utilizing state-of-the-art computer-aided design technology, this false is designed for custom, high tolerance factory fitment. 100% TIG-Welded for race-proven strength and durability.