MAD Valve Controller Essentials
Stop Letting the Car Decide.
BMW’s factory valve logic is conservative. It opens and closes based on mode, throttle, emissions strategy, and whatever else Munich felt like programming that week.
If you’ve ever thought, “why did it just close?” this is why.
The MAD Valve Controller lets you lock the valves exactly where you want them. Open. Closed. Balanced. Your call.
No drama. No guessing.
Valve Modes That Actually Matter
100% Open
Full volume. No restrictions.
50% Open
Balanced tone. Reduced drone. Daily-friendly.
0% Closed
Quiet when you need it. Cold starts under control.
OEM Mode
Back to factory behavior whenever you want.
These are the only positions most owners ever use. So that’s all you get.
Plug and Play. Actually.
Unplug the factory valve connector.
Plug this inline.
Done.
No cutting.
No tapping power.
No permanent modification.
Built for Daily Use
IP68 waterproof housing
Heat-resistant harness
Remembers your last setting after restart
What’s Included
Controller module
Two remotes
Dummy plug for single-valve setups
G-Series and F-Series BMWs equipped with electronic exhaust valves.
Whether you’re running just a midpipe or a full valved setup, this is the control piece most owners end up adding anyway. Might as well do it right the first time.
