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

Fitment:
2009 Audi A4 Base
2009 Audi A4 Cabriolet
2010 Audi A4 Base
2010 Audi A5 Cabriolet
2011 Audi A4 Base
2011 Audi A5 Cabriolet
2011 Audi Q5 Premium
2011 Audi Q5 Premium Plus
2012 Audi A4 Base
2012 Audi A5 Cabriolet
2012 Audi Q5 Premium
2012 Audi Q5 Premium Plus
2013 Audi A4 Base
2013 Audi A5 Cabriolet
2013 Audi allroad Premium
2013 Audi allroad Premium Plus
2013 Audi allroad Prestige
2014 Audi A4 Base
2014 Audi A5 Cabriolet
2014 Audi allroad Premium
2014 Audi allroad Premium Plus
2014 Audi allroad Prestige
2015 Audi A4 Premium
2015 Audi A4 Premium Plus
2015 Audi A4 Prestige
2015 Audi allroad Premium
2015 Audi allroad Premium Plus
2015 Audi allroad Prestige
2016 Audi A4 Premium
2016 Audi A4 Premium Plus
2016 Audi allroad Premium
2016 Audi allroad Premium Plus