$595.00 USD
$595.00 USD




The MAD Valve Controller Essentials is a simplified, plug-and-play solution that gives you total control over your BMW exhaust valves. Unlike the factory system, which constantly opens and closes based on drive mode, throttle input, and emissions requirements, this controller lets you lock the exhaust valves exactly where you want them. The result is a consistent exhaust tone, reduced drone, and a driving experience tailored to your preferences.
Designed for enthusiasts who want ease of use without sacrificing functionality, the MAD Valve Controller Essentials focuses on the positions drivers use most, making exhaust management simple, effective, and enjoyable.
Top Button – 100% Open: Fully open valves for maximum sound and aggression.
Middle Button – Toggle Control: Switch between 50% open (balanced sound, reduced drone) and 0% closed (quiet, controlled driving).
Bottom Button – OEM Mode: Returns exhaust valves to full factory behavior.
These modes cover everyday driving needs without overcomplication.
OEM-style connectors for simple installation
No cutting, tapping, or permanent modifications
Just unplug the factory connector, plug in the MAD controller, and you’re done
IP68 Waterproof: Safe for trunk or under-vehicle mounting
Military-Spec Wiring Harness: Heat-resistant, fireproof sheath for added protection
Memory Function: Retains your last valve setting after restarting the vehicle
Two Premium Remotes: Control exhaust valves easily and conveniently
HomeLink Integration: Manage valve control via vehicle HomeLink buttons
Factory Mode Override: Switch between factory settings, fully open, or custom modes
Dummy Plug Included: Ensures compatibility with single-valve vehicles
Noise Customization: Fine-tune exhaust sound to reduce rasp or drone
MAD Valve Controller Module
Two Premium Remotes
Dummy Plug for single-valve vehicles (used on passenger-side OEM harness for dual-valve setups)
G Body: M and Non-M vehicles
F Body: M and Non-M vehicles with electronic exhaust valves
The MAD Valve Controller Essentials delivers effortless, precise, and reliable control over your BMW exhaust, giving you the perfect sound for daily driving, spirited cruising, or track use.
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$595.00 USD
$595.00 USD
This product can expose you to chemicals such as lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
For a complete list of chemicals known to cause harm, visit https://www.p65warnings.ca.gov/chemicals.
Under the federal Clean Air Act (42 U.S.C. §7522(a)(3)), it is illegal to manufacture, sell, install, or use any part that defeats or alters a motor vehicle’s emission control system for use on public roads. Unless a product has received an Executive Order (EO) from the California Air Resources Board (CARB), it is not legal for use or installation on any pollution-controlled vehicle driven on public highways.
Some states have CARB-equivalent or independent emissions laws. Customers are responsible for verifying local regulations before purchasing or installing emissions-related products.
All performance, racing, or competition parts sold by this company are intended solely for off-road, closed-course, or competition use on vehicles that are never registered or used on public highways.
Kies Motorsports, LLC sells and markets these products for lawful use only. We do not condone or authorize the use of emission-control defeat devices or any modification that violates the Clean Air Act or state regulations.