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Supplier details checked 2026-09-23 · Test catalog
Twisted Steel Downpipe 3 IN 304 Stainless Steel w/ Cat Audi A4/A5 (B8) 09-16 L4-2.0L (t)
Twisted Steel Downpipe 3 IN 304 Stainless Steel w/ Cat
Heavy Duty Laser Cut Stainless Steel Flanges are used for a Durable Leak-Free Seal
Includes Integrated 3rd Bung for Wide-Band O2 Gauge or Auxiliary Instrumentation
Works with Factory Exhaust System with No Modifications Necessary
Utilizes a Single High Flow Catalytic Converter for Maximum Flow
Constructed from 3" Mandrel-Bent 304 Stainless Steel Tubing
100% TIG-Welded for Strength and Durability
Up to +14 HP and +6 lbs. x Ft. TQ.
aFe 09-16 Audi A4/A5 (B8) L4-2.0L (t) Twisted Steel 3in. Downpipe - 304 Stainless w/ Cat
Twisted Steel Downpipe
Stainless Downpipe
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.
