Mobile MG1 tuning · BMW · Mini · Supra
MG Flasher is a mobile ECU tuning platform for modern BMW, Mini and Toyota Supra vehicles equipped with supported Bosch MG1 ECUs. Flash, log, monitor and run advanced custom code from your phone or tablet. At SamuelTuned, MG Flasher is used for custom BMW remote tuning anywhere in the world.
What it is
MG Flasher is a mobile ECU flashing and tuning app for supported BMW, Mini and Toyota Supra vehicles. The platform covers Gen 1 and Gen 2 B46, B48 and B58 engines, plus S58 and S63 applications.
Available for Android and iOS. Designed around OBD flashing, logging and a strong set of mobile-tuning workflows — including some of the best custom-code options on any of the BMW platforms.
The platform
MG Flasher is the app and flashing platform — it connects to the ECU and handles writing, logging and monitoring.
The tune
The tune is the calibration file loaded into the car — what controls boost, fuelling, timing and torque.
MG Flasher makes the workflow possible. The performance, safety and drivability of the car comes from the quality of the calibration loaded through it.
What it lets you do
Why use MG Flasher?
MG Flasher is a strong platform for BMW remote tuning because it is built around fast mobile flashing, datalogging and an unusually deep set of custom-code features. Once your licence and hardware are in place, the car flashes from your phone, datalogs go for review, and revised calibrations come back through the same workflow.
Supported vehicles
Compatibility depends on exact model, engine, ECU type, production date and software version. Some cars need an ECU unlock first — see below.
One of the biggest platforms for MG Flasher tuning — across BMW M Performance and the Toyota Supra A90/A91 3.0.
Common models
Strong support across modern BMW and Mini turbo 4-cylinders. Stage 1, Stage 2 and custom software for the everyday performance B-series cars.
Common models
Modern BMW M cars. Once unlocked, MG Flasher covers flashing, datalogging and custom map revisions across the G-series M range.
Common models
Note · Most newer S58 cars require ECU unlocking before MG Flasher can flash. Once unlocked, the full workflow is available.
Supported across BMW M V8 cars. Big power and torque — accurate datalogging and controlled revisions are essential at this level.
Common models
Compatible Mini models with supported MG1 ECUs — Stage 1, Stage 2 and custom software on modern turbocharged Mini applications.
Common models
BMW B58 under the badge — Stage 1 through big-turbo custom remote tuning, all through MG Flasher.
Common models
Hardware
Coming soon to this site — the right adapter, cable and licence for your car, in one place.
The most common connection method for modern supported vehicles. Suitable for BMW F-series, BMW G-series, Mini Cooper with MG1 ECU, and Toyota Supra A90/A91 — wireless flashing, datalogging, diagnostics and monitoring.
Some customers prefer a wired ENET setup, depending on vehicle, phone, tablet and adapter. Reliable for flashing — most owners use it as a backup to the wireless adapter for daily use.
Required before flashing OTS maps or custom tuning software. Depending on vehicle and requirements, the licence covers flashing, OTS map access, logging access, custom code features and custom tuning support.
Inside the platform
Flash supported MG1 ECUs through OBD once the vehicle is compatible and unlocked where required. Tuning software is installed, updated and revised without removing the ECU.
Records boost, throttle closure, timing, knock, lambda, fuel pressure, torque limits, ethanol content and more. Every custom MG Flasher revision is reviewed against real ECU data.
Switch between map slots without re-flashing — using steering-wheel controls or the in-app diagnostic menu on supported cars. Pump fuel, ethanol, race fuel, low/high boost, valet, track, drag.
Compatible cars adjust calibration based on real-time ethanol content. No manual flashing every time the blend changes.
On supported Gen 1 and Gen 2 B48, B58 and S58 BMWs — change burble intensity using cruise-control button combinations, with multiple switchable levels including burble off.
Adjustable exhaust valve behaviour. Useful for switching between quieter daily driving and a more aggressive sound when wanted.
Useful for hard driving, track use, drag racing or high-temperature conditions where cooling performance matters.
For setups where boost response matters — drag, roll-race, hybrid and big-turbo builds. Configured around your actual hardware and intended use.
Adjust torque delivery per gear — strong for traction management, drag racing, roll racing and high-power builds where the lower gears go traction-limited.
Limit vehicle performance when someone else is driving — valet, garage, parking services or any situation where full power is not required.
Read and clear fault codes during setup, hardware checks, flashing, tuning revisions and post-flash diagnosis.
OTS vs custom
OTS-style MG Flasher maps work on a near-stock car. They are not built around your engine, your fuel, your turbo or your datalogs — and on the more advanced platforms that quickly becomes the limit.
Off-the-shelf
Designed to work across a wide range of cars. Limitations to be aware of:
Built for you
A custom MG Flasher tune is the right route once your car has supporting hardware, ethanol or specific performance goals. The calibration is built around your actual setup and revised against real datalogs until the car is performing correctly.
Especially useful for
Tune stages
Stage 1
M140i, M240i, 340i, 440i, 330i, 230i, G80 M3, G82 M4, G87 M2, F90 M5, Supra 3.0, Mini Cooper S and JCW. Improved power and drivability without major hardware.
Stage 2
Downpipe, intake, charge pipe, intercooler, exhaust, upgraded fuel pump, plugs, cooling — the calibration takes advantage of the upgraded hardware. Strong on B48, B58, S58, S63 and Supra.
Stage 3 / Custom
A generic file is rarely the right answer for a larger turbo — airflow, boost control and torque behaviour change completely. Custom MG Flasher calibration is built around your actual turbo, fuel system, boost response and datalogs.
Remote tuning
Step 01
You'll need the correct MG Flasher hardware to connect to the car — typically the MG Flasher ENET WiFi adapter. Available directly from this site.
Step 02
Install MG Flasher, register your vehicle and activate the licence covering your engine family.
Step 03
Newer BMW G-series and modern Bosch MG1/MD1 ECUs need to be unlocked first. If yours is locked, that step happens before any flashing.
Step 04
Samuel issues your first calibration file. You flash it through MG Flasher from your phone.
Step 05
You drive the car under the requested conditions and record the datalogs Samuel asks for.
Step 06
Samuel reviews the logs, refines the calibration and sends a revised file. You re-flash and run another log set.
Step 07
Once the data shows the car behaving exactly as it should, the calibration is finalised and you keep driving.
ECU unlock
Newer BMW G-series cars, S58 models, S63 models and modern Bosch MG1/MD1 ECUs typically need to be unlocked before MG Flasher can flash them. If yours is locked, MG Flasher won't write any tuning software until the unlock is completed (in-house or via FEMTO/Autotuner depending on the ECU).
ECU unlock guideUnlock typically required for
Before we start
Getting these right makes the tune faster, cleaner and safer.
FAQ
Anything else, message Samuel directly — every MG Flasher build is different.
A mobile ECU flashing and tuning platform for supported BMW, Mini and Toyota Supra vehicles with Bosch MG1 ECUs. Flashes, logs and monitors through a phone or tablet using compatible connection hardware.
Yes — MG Flasher is ideal for remote tuning. Flash files, record datalogs and receive revisions without visiting a workshop.
Different connection methods are supported, but the MG Flasher ENET WiFi adapter is the easiest option for most modern vehicles — it makes flashing, logging and revisions much simpler.
Yes — MG Flasher hardware will be available to purchase directly from this site.
Yes — MG Flasher is available for both Android and iOS users.
Yes — switchable maps on-the-fly, flex fuel and anti-lag are all supported on compatible vehicles and setups.
No. If your ECU requires unlocking, that has to happen before MG Flasher can flash any tuning software.
For a near-stock car, an OTS map can be enough. For modified cars, ethanol setups, upgraded turbos, track cars or drag cars, a custom MG Flasher tune is the right route — calibrated around your actual setup.
Ready to start
Whether you already have MG Flasher or are starting from scratch, the process can be handled remotely from anywhere in the world.