{"product_id":"bmw-exhaust-valve-controller-module-with-app-control","title":"BMW Exhaust Valve Controller Module with App Control","description":"\u003cp\u003e\u003cstrong\u003eBMW Exhaust Valve Controller Module with smartphone app control. Open or close your exhaust valves independently of drive mode via Bluetooth app. Plug-and-play OBD installation, no cutting wires. Compatible with all BMW models with factory exhaust valve flaps. $459 USD at M-TRI UPGRADE.\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003eSound familiar?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eYour BMW sounds flat and muffled at startup — the exhaust valve stays closed and you never get that cold-start bark the M cars are known for.\u003c\/li\u003e\n\u003cli\u003eYou paid for an M-sport or M-performance exhaust and it only opens the valve at high RPM, leaving most of your driving sounding stock.\u003c\/li\u003e\n\u003cli\u003eYour friend's M3 has a Sport+ exhaust mode and yours doesn't — same engine, different software, completely different character.\u003c\/li\u003e\n\u003cli\u003eYou want the valve open all the time on track days, but closed on early morning drives, and there's no way to switch without a full tune.\u003c\/li\u003e\n\u003cli\u003eThe dealer quoted you hundreds just to change the exhaust map — for a feature that's physically already on the car.\u003c\/li\u003e\n\u003cli\u003eYou've seen the exhaust flap sitting there doing nothing during normal driving and wondered why you can't just control it yourself.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBMW Exhaust Valve Controller Module with App Control (Single \/ Dual Valve)\u003c\/h2\u003e\n\u003cp\u003eAn exhaust-valve controller module that takes over the factory exhaust flap(s) on M-sport and M-performance BMWs, giving you full manual or RPM-based control over the valve angle - and therefore the exhaust tone - from a WeChat mini-program on your phone.\u003c\/p\u003e\n\u003ch3\u003eAvailable Configurations\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle-Valve edition\u003c\/strong\u003e - for models with one exhaust valve (typically mid-range and some M-performance cars)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Valve edition\u003c\/strong\u003e - for M-sport \/ M-performance models with two exhaust flaps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eControl Modes\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOriginal Car Mode\u003c\/strong\u003e - factory-stock valve behavior, fully reversible\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRPM Mode\u003c\/strong\u003e - set the valve angle independently for each RPM band:\n    \u003cul\u003e\n      \u003cli\u003eIdle valve angle (30° \/ 100°)\u003c\/li\u003e\n      \u003cli\u003e1000-2000 RPM valve angle (50° \/ 100°)\u003c\/li\u003e\n      \u003cli\u003e2000-3000 RPM valve angle (50° \/ 100°)\u003c\/li\u003e\n      \u003cli\u003eAbove 3000 RPM valve angle (50° \/ 100°)\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDriving Mode\u003c\/strong\u003e - sync the valve to the factory driving mode:\n    \u003cul\u003e\n      \u003cli\u003eEco mode - valve closed\u003c\/li\u003e\n      \u003cli\u003eComfort mode - 30° \/ 60° \/ 100°\u003c\/li\u003e\n      \u003cli\u003eComfort Plus mode - 30° \/ 60° \/ 100°\u003c\/li\u003e\n      \u003cli\u003eSport mode - 30° \/ 60° \/ 100°\u003c\/li\u003e\n      \u003cli\u003eSport Plus mode - 30° \/ 60° \/ 100°\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSpecial Function - Activate Roar Mode\u003c\/h3\u003e\n\u003cp\u003eOpens the valve for a timed burst (Off \/ 10 sec \/ 20 sec \/ 30 sec) for a dramatic cold-start roar or rev-up sound-show on demand.\u003c\/p\u003e\n\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\n\u003cp\u003eBMW BCP-compatible chassis with factory exhaust flap actuators. Specify your model and year when ordering.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003ePlug-and-play - inserts between the factory valve actuator and the original harness. No cutting, no ECU coding. All control is from the mini-program on your phone.\u003c\/p\u003e\n\n\u003c!-- mtri-faq-v1-start --\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv class=\"product-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eDoes this work with the factory M Sport \/ M Performance exhaust valves?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes — designed specifically for BMW models with factory electronic exhaust valves: M340i, M440i, M550i, X3M40i, X4M40i, M3 (F80\/G80), M4 (F82\/G82), M5 (F90), and others with the OPF\/sport exhaust valve hardware.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan I open the valves in Comfort mode for max sound?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. App controls let you override factory logic — open in Eco, Comfort, Sport, or any mode at any RPM. Or set custom RPM\/load thresholds.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWill this affect emissions or fail an inspection?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eValve position doesn't affect catalytic converter operation or OBD-II emissions readiness. The exhaust still flows through the same cats. No CEL or check engine codes from valve position alone.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eDoes it require any cutting or modifying my exhaust?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eNo. Plugs into the exhaust valve actuator harness — fully reversible. Original valve operation can be restored by unplugging.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is the app connection — Bluetooth or WiFi?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eBluetooth Low Energy. Pairs to your phone in range when in the car. iOS and Android apps included free.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c!-- mtri-faq-v1-end --\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"can I control my BMW exhaust valve from my phone\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — the BMW Exhaust Valve Controller Module connects to your factory exhaust flap wiring and lets you open, close, or set RPM-based rules directly from a WeChat mini-program. No tune required, no permanent modifications to the car's ECU.\"}}, {\"@type\": \"Question\", \"name\": \"how do I make my BMW exhaust louder without a full tune\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The simplest hardware approach is an exhaust valve controller, which overrides the factory flap logic and holds the valve open at angles you choose. The mtriupgrade module does this for single and dual-valve M-sport and M-performance setups and installs in under an hour.\"}}, {\"@type\": \"Question\", \"name\": \"will an exhaust valve controller work on my BMW without voiding warranty\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module plugs into the existing valve wiring and does not reflash the DME, so it leaves no trace in factory systems. It's reversible — unplug it and the car returns to stock behavior. Whether that satisfies your specific dealer's warranty position is worth confirming, but there's no ECU writing involved.\"}}]}\u003c\/script\u003e","brand":"M-TRI UPGRADE","offers":[{"title":"Default Title","offer_id":51456597131554,"sku":"MTRI-EXVL-STD","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/4028\/0354\/files\/img1_clean.jpg?v=1779196274","url":"https:\/\/mtriupgrade.com\/products\/bmw-exhaust-valve-controller-module-with-app-control","provider":"M-TRI UPGRADE","version":"1.0","type":"link"}