The dAHLer Exhaust Flap Control Module X (Dual Valve) for BMW and BMW M cars 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 dAHLer valve controller installed you can manually open and close the standard built-in exhaust valve of your BMW at any time. It operates at the push of a button on the included remote control or can be programmed to your mirror buttons, so the system will be very well integrated. The valve also opens at 100%, which helps provide a genuine sound increase on models such as the G8x M3/M4 that the valves may never open completely as standard.

Installation of the dAHLer valve controller in your BMW is easy and can be carried out by anyone with a little experience. 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 the smart dAHLer Valve Controller Module, you cannot close the exhaust flap permanently. This is for safety reasons as when driving at full throttle with the exhaust valve closed it could damage the engine in a long term.

This valve control kit is suitable for F-Series and G-Series models with a dual exhaust valve actuator only. The dAHLer Exhaust Flap Control Module X for models with single exhaust valve actuators can be found here. Please confirm the suitability of this kit for your vehicle prior to placing an order.

Compatible with all BMW and aftermarket exhaust system that utilise the OEM electronic valve actuators.

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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).

As the dAHLer Valve Controller Module integrates as minimally in the vehicle as necessary, it does not leave an error message. When your car goes to the BMW workshop for maintenance, no errors appear on the DIS machine.

The dAHLer Valve Controller Module for BMW is also undetectable to plug-in diagnostic readers and it leaves no traces behind.

The system has been checked and is it not causing any damage to your vehicle. Each of dAHLer's systems are 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.

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.

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General installation instructions for the dAHLer Exhaust Flap Control Module X can be downloaded here.

Programming instructions for the remote controller can be downloaded here. 

With dAHLer Exhaust Flap Control Module X, all of the factory safeguards of your BMW remain in place, including overload protection and warm-up protocols to preserve longevity and factory drive-ability. One of the amazing advantages of this type of system is that it is unaffected by factory BMW updates and service.

If BMW updates the computer software, the dAHLer Valve Controller Module is not lost or overwritten. This is just another key aspect of our module because BMW is constantly releasing small software updates. All of the factory diagnostics and service access is retained.

The dAHLer Exhaust Flap Control Module X is undetectable to plug-in diagnostic readers and it leaves no traces behind.

All dAHLer Valve Controller Modules for BMW cars were thoroughly evaluated on the street, track and unrestricted German Autobahn. Each exhaust flap control module is manufactured in Germany at an ISO 9001:2015 certified facility to fulfill the highest safety standards.

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dAHLer Competition Line makes no guarantees to the lawfulness of any parts used for “on highway vehicles” and accepts no responsibility for compliance with the vehicle’s OEM warranty. For Race Track Use only.