Smooth bends, tight packaging, and two attitudes. The SwitchPath* Exhaust is comprised of handcrafted 3-inch and 2.5-inch U.S.-sourced T304L stainless steel single pass, 5-cylinder-specific tuned driver*s side muffler with a valved passenger-side tip outlet. SwitchPath* retains the factory valve behavior and obeys the ECU's commands based on throttle input, engine speed, Drive Select, and the factory-issued exhaust button within the cabin. Sneaking out in the morning or creeping through town? Close the valve. Drop the hammer (or click into Dynamic mode), and your RS 3 will sing a signature AWE tune with enhanced RS burbles that will provoke a firm grin. AWE's Lifetime Warranty, No CEL Light Guarantee, and Perfect Fitment Guarantee come standard. AWE SwitchPath* Exhaust for Audi 8Y RS 3