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