MG Flasher

MG Flasher is an OBD ECU tuning app designed to unlock performance on BMW vehicles equipped with MG1 ECUs and B46, B48, or B58 engines via ENET Wi-Fi. Flash your BMW in seconds—initial setup takes 4–6 minutes, then subsequent flashes complete in just 15–20 seconds, making real-time tuning adjustments faster and easier than ever.

Take control of your engine's behavior with switchable performance maps that you can change on-the-fly using cruise control buttons—no reflashing required. This world-first solution for BMW B58 and B48 engines lets you instantly switch between different mapping profiles while driving. Adjust dynamic exhaust burble intensity whenever you want, fine-tune cooling performance, and customize your driving experience without returning to the shop.

Unlock advanced performance features including torque limit adjustability with TCU 8HP limiter lifted for all platforms. Unlike software trickery, MG Flasher uses genuine software calibration that maintains smooth shifting and accurate torque calculations. Access speed limit removal, startup roar tuning, and torque-by-gear limiting on compatible software versions. Ethanol blend support is built directly into OTS maps for vehicles that support it, with switchable map technology making fuel selection seamless.

Monitor real-time engine data through the built-in logger, plotting performance graphs to troubleshoot issues and optimize tuning. Upload logs to the cloud viewer on logs.mgflasher.com for professional-grade analysis. Read and clear BMW-specific diagnostic trouble codes (DTCs), reset adaptations, and restore coding directly from your phone. The app preserves your CVN number and flashing counter—keeping modifications virtually invisible to dealer-level diagnostics.

Customize sport gauges displaying horsepower and torque adjustments to your preferences. Flash pre-built OTS maps tuned by MG Flasher professionals or load custom maps from other tuners. Comprehensive support covers all modern BMW generations including the F20, F22, F30, G20, G30, G11, and latest G-series platforms, plus BMW X-series, Z4, and Toyota Supra A90.

Whether you're chasing power gains, refining driving dynamics, or exploring ethanol performance, MG Flasher puts professional-grade ECU tuning in your hands. For off-road use only.