In the case of the exhaust valve, it is manufactured according to strict European standards.

Rather than the concept of On/Off, it operates based on the opening ratio and closing ratio, overcoming differences between countries and providing more delicate valve control. However, due to various conditions, it is often imported in a state excessively restrained.

Using Bofen, you can fully open or completely close the valve with simple button operation. Additionally, you can easily return the valve to the original state of the stock vehicle with a simple button press.

 

It supports almost all BMW vehicles with motorized valves.

Korean G80/82/83 vehicles are not supported (Japanese and US versions are supported).

Furthermore, it includes a feature to disable Active Sound Design (ASD), allowing you to fully hear the exhaust sound without interference from ASD. Of course, you can easily switch back to ASD if needed.