MAD Bmw Supra Mini Plug & Play Exhaust Valve ControllerEnhance your vehicle's exhaust system with the MAD Valve Controller, the ultimate tool for customizing your exhaust sound and performance. Designed to override factory settings, this controller gives you complete control over your exhaust flap, allowing you to tailor the exhaust note to match your driving style. Unlike stock systems that adjust the exhaust flap based on driving modes and conditionsoften prioritizing noise regulation. You can easily