Introducing the 2025 updated IP68-rated dÄHLer Exhaust Valve Control Module (Dual Valve)  — the ultimate solution for BMW and BMW M enthusiasts who demand complete control over their factory exhaust system. Developed in Switzerland and manufactured in Germany, this precision-engineered plug-and-play module allows you to open and close your BMW’s stock exhaust valves on demand, unlocking the deep, authentic sound and character your car was designed to deliver.

Unlike basic modules that override or completely bypass the OEM valve control, the dÄHLer system integrates intelligently with the factory electronics. This allows you to switch freely between full manual control via the dÄHLer module and the standard BMW valve operation controlled by your drive modes. In other words, you can enjoy the best of both worlds — the factory refinement when you want it, and the unrestricted, fully open exhaust note at the press of a button.

With the dÄHLer system installed, you gain true manual command of your exhaust valves at the press of a button. Operation is simple —  use the included remote control or, in compatible markets, program the system to your BMW’s mirror buttons for seamless, factory-style integration (not available in Australia).  The module ensures the valves open fully to 100%, giving you a genuine increase in exhaust tone and flow, especially on models like the G8x M2/M3/M4 where the stock valves rarely open all the way.

OPEN Button | Keeps exhaust valves fully open until the engine is turned off

CLOSE Button | Instantly reverts back to the factory valve settings

Installation is straightforward and fully reversible, requiring no cutting, splicing, or additional power cables. The dÄHLer module connects directly to your BMW’s OEM wiring harness — simply unplug the factory connector, insert the dÄHLer module in between, and connect the output to the exhaust valve actuator. All wiring is routed neatly through existing cable ducts or unused sealing plugs, with the entire installation contained within the trunk or underbody area for a clean, OEM-grade finish.

Many entry-level valve controller modules struggle with heat exposure, moisture ingress, and corrosion over time,  but the dÄHLer Exhaust Valve Control Module is built to endure real-world conditions. Its IP68 rating means it is completely dust-tight and fully protected against water immersion up to 1.5 metres for 30 minutes — a level of durability far beyond what most generic controllers can withstand. Housed in a flame-retardant UL 94 V-0 polycarbonate enclosure and tested for operation between –30°C and +80°C, the dÄHLer module maintains flawless functionality in both extreme heat and wet environments. Whether installed underbody, near exhaust heat, or exposed to rain and road grime, it continues to perform without the failures, moisture damage, or electrical faults that commonly affect other alternatives.

Every dÄHLer Exhaust Valve Control Module is designed to integrate perfectly with your BMW’s factory systems. It requires no permanent modifications and is completely undetectable by diagnostic tools, preserving your car’s warranty and resale value. Safety is paramount — the module ensures that exhaust valves never remain closed during full-throttle conditions, maintaining optimal exhaust flow and engine protection.

Each dÄHLer Exhaust Valve Control Module includes two remote controls, allowing you to share access or keep a spare. Every unit is built in an ISO 9001:2015-certified facility, individually tested for quality and function, and backed by a comprehensive three-year worldwide warranty.

The 2025 dÄHLer Exhaust Valve Control Module now features a robust IP68 rating, delivering superior protection against the harsh conditions your BMW encounters on the road. “IP” stands for Ingress Protection, with the “6” indicating complete dust-tight sealing to keep internal components clean and secure. The “8” means the controller can be submerged in water up to 1.5 meters (5 feet) deep for 30 minutes without sustaining damage — ensuring reliability in all weather conditions.

Constructed from UL 94 V-0 certified polycarbonate, the valve controller meets the highest flame-retardant safety standards, meaning any burning ceases within 10 seconds on a vertical surface, with particle drips permitted only if not ignited. It also boasts an IK07 shock resistance rating, capable of withstanding impacts up to 2.0 joules — equivalent to a 500-gram object dropped from 40cm — ensuring durability against road vibrations and shocks. Additionally, it performs reliably across a broad temperature range from -30°C to +80°C (-22°F to 176°F).

Manufactured in an ISO 9001:2015 certified facility, each dÄHLer Exhaust Valve Control Module is individually tested and quality assured, setting it apart as a premium, high-performance product.

This dÄHLer Exhaust Valve Control Module is specifically engineered for F-Series and G-Series BMW models with dual exhaust valve actuators. For vehicles with a single exhaust valve actuator, the suitable module is available here. Please verify compatibility with your vehicle before placing your order.

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

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Unlike the factory system that only partially opens the exhaust valves, the dÄHLer Exhaust Valve Control Module lets you fully open them to 100% for a true, aggressive exhaust sound on demand.

Use the remote control to set how your vehicle starts, choosing between OPEN or STOCK valve positions. Alternatively, activate the memory function to have the device remember the last driver’s setting even after the engine is turned off.

The dÄHLer Exhaust Valve Control Module integrates discreetly into your vehicle, ensuring it is neither lost nor overwritten during BMW software updates. It operates silently without triggering error messages, so no faults appear on the BMW DIS diagnostic system during maintenance.

Now with an IP68 rating, the dÄHLer Exhaust Valve Control Module is dustproof and waterproof, capable of withstanding submersion in water up to 1.5 metres (5 feet) for 30 minutes without damage. Built with robust materials and designed to endure harsh road environments, it guarantees long-term reliability and protection against the elements.

The dÄHLer Exhaust Valve Control Module is completely undetectable by plug-in diagnostic readers and leaves no trace once removed, preserving your vehicle’s original condition.

Manufactured from the ground up in an ISO 9001:2015 certified facility in Germany, this module is engineered to prevent any interference with your vehicle’s data bus and reliably operates within a temperature range of -30°C to +80°C (-22°F to 176°F), requiring no additional heat protection.

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General installation instructions for the dÄHLer Exhaust Valve Control Module is available for download here. Vehicle-specific installation guides are also available for some models on request.

The programming instructions for the remote controller can be downloaded here. 

The dÄHLer Exhaust Valve Control Module maintains all of your BMW’s original safety features, including overload protection and engine warm-up protocols, ensuring long-term reliability and factory-level drivability. It is designed to remain fully functional and unaffected by BMW software updates or servicing, preserving all factory diagnostics and service capabilities. It's also completely undetectable by plug-in diagnostic tools and leaves no trace when removed, keeping your vehicle’s integrity intact.

Each dÄHLer Exhaust Valve Control Module is rigorously tested under real-world conditions — including street driving, track use, and high-speed runs on the German Autobahn — and is manufactured in Germany at an ISO 9001:2015 certified facility, meeting the highest safety and quality standards.

dÄHLer Competition Line makes no claims regarding the street legality of its products and assumes no responsibility for compatibility with your vehicle’s OEM warranty. Products are intended for race track use only.