iPE Valvetronic Exhaust System Valvetronic stands for our own valve-controlled exhaust technology that delivers power and control to the driver’s seat. Our valvetronic exhaust systems are operated by a remote control module or OBD gesture controller and come in three modes: on, off, and auto. In on mode, the valves are fully open for maximum air flow, allowing for better performance and increased sound volume with an astonishing and clean tone. When pressing the off button, the valves close completely, which significantly reduces the sound volume for a comfortable drive. For the ultimate driving experience, the auto mode is the right choice: the system detects the fuel pedal signal and adjusts the valve movements accordingly and automatically for a dynamic drive.