Borla Atak 3.0" Cat Back ExhaustSystem includes a merge X Pipe for increased performance and improved sound. This system has single polished T 304 stainless steel tips. It does NOT include Dual Mode or AFM valves. On vehicles equipped with factory AFM valves a check engine light will be activated. 3" Diameter system is intended for vehicles with significant upgrades that require a larger diameter exhaust. It is recommended for use with Long Tube Headers. BORLA Cat Back & Axle Back