With the device installed you can manually open and close the standard built-in exhaust flap of your BMW M850i or 840i at any time. It operates at the push of a button on the in delivery included remote control or can be programmed to your mirror buttons, so the system will be very well integrated.
Installation of our Exhaust Flap / Valve Control Module in your BMW M850i or 840i is easy and can be carried out by anyone with a little manual skill. The device is a direct plug in to the existing (OEM) harness. You pull out the original plug and connect it to the socket. The other plug is then connected to the socket on the exhaust flap and the connection is done.
The complete installation takes place in the trunk and under-body. You look for a cable duct or unused sealing plug that leads from the inside to the outside. Power supply comes directly from the original plugs and there is no need to lay cables through the interior of the vehicle.
With our smart Exhaust Flap / Valve Control Module, one cannot close the exhaust flap permanently. This is for safety reasons as when driving at full throttle with the exhaust flap closed it could damage the engine in a long term.
You can choose between 2 options
Flap Control S
You can switch the exhaust flap to OPEN permanently and back to STOCK function with the 2-button remote control.
With the OPEN function the flap stays open until you either close it via remote or turn off engine. With the STOCK function the BMW engine control unit takes over the opening and closing. The start setting is predefined to STOCK and cannot be changed.
Flap Control X
In addition, Stage 2 has the functions of Stage 1 and the following:
Start mode adjustable via remote control or memory function