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MG Flasher

MG Flasher

by JR Auto Performance Inc.

89 ratings
21 reviews
🔧 Utilities
⚽ Sports
Free

Details

  • Released
  • Updated
  • January 27, 2020
  • August 5, 2026

Features

Developer

JR Auto Performance Inc.
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About

This app allows for advanced ECU tuning and feature unlocking for specific BMW and Supra engines via OBD and Wi-Fi. It offers on-the-fly map switching, custom options, flex fuel integration, and diagnostic capabilities for enhanced vehicle performance. Designed for off-road use only.

✓Custom performance modifications
✓Switchable maps on-the-fly
✓Dynamic exhaust burble control
✓Flex fuel integration
✓Torque limiter adjustment
✓Speed limit removal
✓Diagnostic DTC reading/clearing
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What's New in MG Flasher

496

August 5, 2026

Changed - Check Support no longer stops with "Could not calculate valid DTCs" when the server has no DTC definitions on file for your car and answers with an empty list. A genuine failure to reach the server still reports the error - Cars with the newest generation of engine control hardware now say so when you check support, naming your engine and listing which features work today and which do not, instead of asking you to contact support about a missing calibration. Flashing of any kind is listed as unavailable for now, and the notice can be dismissed for that car

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User reviews

Most RecentHighest RatedLowest Rated

App no longer function after update

None of the custom controls are working I can’t even check for a code it just won’t respond to any of the clicks and has a ! Inside of a green circle next to every option , please advice I’ve already emailed twice about this and waited almost a week for a response.
OnlyboostllcOnlyboostllc

Интерфейс

Сделайте пожалуйста поддержку русского языка 🇷🇺🇷🇺🇷🇺
Игорь 💪Игорь 💪

Hard to use, BM3 way better

Just had a horrible experience with mg flasher ancient interface that it seems MHD clone it. But after I switched to Bootmod3 everything with the power is good now. Shouldn’t have wasted my time
FrikitonFrikiton

大陆帐户无法登录

大陆手机号码无法接收验证码
垃圾货 啥也不是垃圾货 啥也不是

Terrible service

Never have been able to use any tune. They attempted to fix it once then ignored many follow up emails. They don’t want to deal with their own software issues if it takes time or costs them a refund.
Evan..lEvan..l
See 16 more reviews

FAQ

What does MG Flasher do?

MG Flasher is a mobile tuning application designed for specific BMW and Supra engines. It enables users to perform ECU flashing, unlock custom features, and adjust various performance parameters through an OBD connection using Wi-Fi. The app is intended for off-road use only.

What are the key features of MG Flasher?

Key features include custom performance modifications, on-the-fly switchable maps and exhaust burble control, flex fuel integration with automatic calibration, torque limiter adjustments, speed limit removal, and the ability to read and clear BMW-specific DTCs. It also supports custom map flashing and data logging.

How much does MG Flasher cost?

Based on the provided information, the app is available for free. There are no mentions of in-app purchases or subscription fees for the core functionality of the application.

What vehicles are compatible with MG Flasher?

The app supports a wide range of BMW models equipped with B48, B58, S58, N63, S63, and N74 engines. This includes various series like M140i, M240i, M340i, M440i, M3, M4, 540i, 740i, 840i, M8, and several X models. Specific engine codes and chassis designations are listed in the app's description.

Can I use MG Flasher for daily driving?

No, MG Flasher is explicitly stated to be for off-road use only. Using the app for tuning on public roads may violate local regulations and is not recommended.