Outstanding Exhaust System With Valvetronic For Everyday UseThe Audi S7 refined with an iPE Innotech Performance Exhaust system awakens the sporty soul of anyone behind the steering wheel. Our Valvetronic exhaust delivers both power and dynamic valve control to the driver's seat. The full system includes the remote capability to command 3 different modes: on, off, and auto. In on mode, the valves are fully open for maximum flow and power, releasing the pure sporty sound of the engine. In off mode, the valves are closed and volume is reduced for a comfortable cruise. The auto mode enables the system to detect the engine RPM and gas pedal signal to automatically adjust the valve movements for a dynamic driving experience.