APR's RSC™ Turboback Exhaust System replaces the entire factory exhaust with a High-Flow, Reflective-Sound-Canceling, mandrel-bent, stainless-steel design with minimal bends and no restrictive baffling or valving to impede exhaust flow. Beginning as a 4" v-band system, the exhaust smoothly transitions into a single 3" design with a high flow catalytic converter. Unwanted exhaust notes are cancelled out through the first RSC™ chamber before transitioning into a dual 2.5" design. Drone is completely removed as the exhaust travels through the rear RSC™ chambers before exiting the vehicle. You're left with the true sound of the Audi turbocharged 5-cylinder-engine and thanks to the RSC™'s free-flowing design, power and torque are greatly increased. The APR Turboback Exhaust System is a combination of the APR Downpipe and Catback Exhaust System, however each part may be purchased separately for use with your factory components.

APR's design specifications and manufacturing requirements resulted in a 4" v-band turbo outlet with a smooth transition into a 3" mandrel-bent stainless-steel design. The APR RSC™ Downpipe features a high-flow 200-cell metal matrix catalyst and connects seamlessly with the APR RSC™ or factory catback exhaust system. When connecting to the factory catback exhaust system, the downpipe splits from a 3" design to a dual 2.5" system after the secondary catalysts. Alternatively, when used as a full APR RSC™ Turboback Exhaust System, the downpipe remains as a 3" system and connects directly to the APR RSC™ Catback Exhaust. In either setup, no cutting or welding is necessary as the system is a direct fit and includes all necessary components for connecting to either the factory catback or APR RSC™ Catback.

APR's RSC™ Catback Exhaust begins as a 3" design and splits to a dual 2.5" design for each exhaust outlet. Smooth and unrestricted transitions at the splitter ensure exhaust velocity is not hindered. The mandrel-bent stainless-steel design is free of restrictions thanks to APR's RSC™ Technology found in each chamber. Three straight-through RSC™ chambers are specifically tuned to remove undesirable sound frequencies, "drone", from the cabin resulting in only the engine's true and desirable exhaust note. Expect quiet operation at low speeds and idle with nearly no in-cabin noise and experience the classic Audi 5-cylinder turbocharged exhaust note the second you mash the accelerator. The exhaust note is controlled by your right foot and does not require valving to restrict exhaust flow in an effort to reduce noise. The Catback Exhaust System does not alter any factory emissions components so it's emissions-testing friendly.