MG Flasher is a mobile App to tune your BMW equipped with an MG1 ECU and B46, B48 or B58 engine by OBD using ENET Wi-Fi or ENET cable*. Flashing time on ENET is only 15 - 20 seconds! Disclaimer: For off-road use only.
*Initial flash/ECU unlock with ENET will take approximately 4 - 6 minutes.

Flashing License purchase will allow you to use following MG Flasher functions:
• Switchable Maps On-The-Fly - WORLD'S FIRST SOLUTION FOR BMW B58/B48 - through a simple combination of the Brake Pedal, Accelerator Pedal, Traction Control Button and the Driver Select Switch you can quickly select between mapping, without the need to reflash vehicle! Support for HPFP included! Hybrids and Gen 2 switchable maps, including all ethanol maps, are under development.
• Dynamic Exhaust Burble On-The-Fly - via a simple combination of the Driving Experience Switch and the MSA button you can change the intensity of the burbles whenever you like! MG Flasher offers Hybrids and Gen 2 adjustable options during flash; On-The-Fly features are under development.
• Max Cooling On-The-Fly - With a simple button combination sequence, you can enable the option without reflashing the car! MG Flasher offers Hybrids and Gen 2 adjustable options during flash; On-The-Fly features are under development.
• Torque Limit Adjustability - TCU 8HP Limiter Lifted for Gen 2 B48 and B58 platforms! Software calibration without the need for any transmission tuning or skewing the torque/load calculation model maps. This allows for accurate calculations, smooth shifting and no software trickery.
• Speed limit removal
• Ethanol Blends (up to E30) are built into our OTS maps and available using Switchable Maps (on select vehicles only)
• Cold start with CAT heating delete (racing/off-road use only)
• HP gauge and TQ gauge calibrated according to the power level (available with each OTS map)
• Custom flashing – flash custom maps prepared by us or other tuners/users
• OTS maps/ All OTS pack (subject to additional cost)
• Logger - log real time data and plot it into graphs for troubleshooting and optimizing (subject to additional cost 99 USD/EUR)
• Cloud Log Viewer - Professional log viewing on
• Diagnostic- Read and clear BMW specific DTC's
• Reset various adaptations, restore coding
• CVN number (Checksum Verification Number) along with flashing counter stays untouched. This means our software will be virtually invisible to dealer level diagnostic tools

ALL future updates to the tune are FREE of cost. If we introduce a newer version, you won’t have to pay anything to get the upgrade

Supported vehicles:
BMW M140i/120i/125i/M135i F20/F21/F40
BMW M240i/220i/225i/230i/228i/M235i - F22/F23/F44
BMW M340i/318i/320i/330i/330e - F30/F31/F34/G20/G21/G28
BMW M440i/420i/430i - F32/F33/F36/G22
BMW 540i/520i/530i/530e - G30/G31/G38
BMW 640i/630i - G32
BMW 740i/740Li/730i/730Li/740e/740Le - G11/G12
BMW 840i - G14/G15/G16
BMW X1 20i/25i/28i -F48
BMW X2 20i/25i/28i/M35i - F39
BMW X3 M40i/20i/30i - G01
BMW X4 M40i/20i/30i - G02
BMW X5 40i - G05
BMW X6 40i - G06
BMW X7 40i - G07
BMW Z4 M40i - G29
BMW Z4 20i/30i - G29
Toyota Supra - A90

What’s New

Version 288

Fixed stage version presentation on some sort of devices (text trimming)
Resolved Exhaust Flap not opening on select software versions (wasn't staying open)
Resolved custom options "map address missing" bug when ecu is in bootmode

New Burble Styles and customization, including "Flame" mode for extra aggression
Startup Roar for select models and software revisions (some hybrids are not supported)
Torque by gear limiters (great for FWD & RWD cars with a lot of power)
Independent map for stage 2.5
Ability for tuners to bypass Custom Code maps (burbles and cooling)
Logging of single ECU on S63 vehicles
Logging ambient air temperature and exhaust flap status
China Version Translations Update
Fix connect button size on iPhone 12 Mini
Warning about newer ECU manufacturing date being unsupported (Newer than July 1st, 2020)
Previous map selection fix on iOS platform
Flashing will show 100% (instead of 99%) before clearing DTC and showing complete
Resolved bug on some devices that prevented successful ENET connections

Ratings and Reviews

4.8 out of 5
22 Ratings

22 Ratings

NicOttawa ,

Great product great support

This product is awesome. The extra power for my B58 is kick-in-the-pants noticeable. I’ve sent them a question twice now and both times responded quickly and helpfully. Highly recommend.

Pekkaisawesome ,

The best tuning company!

Been using these guys for about a year, anytime I have ever had a question they were quick to get back to me and help me. These guys special in a couple bmw models and IMO are masters at their craft!

bambam_f30 ,

Great app

Love how easy it is to use and great tunes

App Privacy

The developer, JR Auto Performance Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Purchases
  • Contact Info
  • User Content
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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