The dAHLer Exhaust Flap Control Module for the BMW 540i G series was developed in Switzerland and manufactured in Germany and is a must have if you like to control the sound of your car.
With the device installed you can manually open and close the standard built-in exhaust flap of your BMW 540i 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 540i 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 (this option is not available in the US)
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 (this option is available in the US)
In addition, Stage 2 has the functions of Stage 1 and the following:
Start mode adjustable via remote control or memory function
You can use the remote control to specify the function in which the vehicle should start. Or you can activate the memory function and the device always remembers the last driver’s setting even after an engine stop (OPEN or STOCK).
If BMW updates the computer software, our Exhaust Flap / Valve Control Module is not lost or overwritten.
As our Exhaust Flap / Valve Control Module operates as minimally in the vehicle as necessary, it does not does not leave an error message. When your BMW 540i goes to the BMW workshop for maintenance, no errors appear on the DIS machine.
The dAHLer Exhaust Flap / Valve Control Module for the BMW 540i is undetectable to plug-in diagnostic readers and it leaves no traces behind
Our Exhaust Flap / Valve Control Module for your BMW 540i vehicles are here to improve your driving experience with an awesome sound.
The system has been checked and is it not causing any damage to your vehicle. Each of our systems is individually checked for function after assembly and subjected to quality assurance. All Modules are made in Germany by a team of specialists at an ISO 9001:2015 certified facility.
Exhaust Flap / Valve Control Module for the BMW 540i is built to be safe from the ground up, so that it cannot interfere with the data bus.
The Module is permanently resistant from up -30° to +80° C (-22° to 176° F). As a rule, you don’t need any additional heat protection.