MHD Flasher

MHD Tuning UG

In-app purchases

About this app

MHD Flasher is a complete flash tuning app for your BMW & Toyota Supra A90. Unlike a piggyback module, it is capable of complete DME remapping while retaining all OEM safety mechanisms. This allows for maximum performance, maximum safety, and unrivaled drivability.
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Full OBD Flashing:
You can install MHD right at home and start tuning immediately! Simply download the MHD Flasher app that connects via a MHD WiFi adapter and your vehicle’s OBD-II port, start the app and within 5 minutes the initial installation is complete. Further map changes are much faster - only 20 seconds! You can revert your vehicle to the factory OEM flash at any point, and no initial backup is necessary.
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E-Series N54 Stage 1, 2, and E85 OTS (Off The Shelf) Maps by Wedge Performance

E-Series N55 Stage 1, 2, and E85 (Off The Shelf) OTS Maps by Twisted Tuning

F/G Series B58/S58 Stage 1, Stage 2 and E85 OTS (Off The Shelf) Maps by PureBoost

N55 EWG (Vehicles built after 07/2013 with electronic wastegate):
- Stage 1 (up to 360HP/540NM) (not available for M2 and X4 M40i)
- Stage 2 (up to 390HP/580NM)
- Stage 2+ (up to 430HP/630NM)
- Ethanol Mix Maps: Stage 1, 2 and 2+ E20 Maps for ethanol blends of 20%

N55 PWG (pneumatic wastegate):
- Stage 1 (up to 340HP/540NM)
- Stage 2 (up to 370HP/580NM)
- Stage 2+ (up to 400HP/630NM)
- Ethanol Mix Maps: Stage 1, 2 and 2+ E20 Maps for ethanol blends of 20%

S55 (BMW M3 / M4 F8x):
- Stage 1 (up to 530HP/700NM)
- Stage 2 (up to 560HP/780NM)
- Ethanol Mix Maps: Stage 1, 2 and 2+ E30 Maps for ethanol blends of 30%

B58:
- Stage 1 (up to 440HP/600NM)
- Stage 2 (up to 470HP/650NM)
- Stage 2+HPFP (up to 500HP/700NM)
- Ethanol Mix Maps: Stage 1, 2 Maps for ethanol blends of 30%

S58:
- Stage 1 (up to 630HP/750NM)
- Stage 2 (up to 700HP/850NM)
- Ethanol Mix Maps (up to 750HP / 880NM): Stage 1 & 2 E30+ Maps for - ethanol blends of 30%+

S63:
- Stage 1 (up to 720HP/900NM)
- Stage 2 (up to 780HP/950NM)
- Ethanol Mix Maps (up to 800HP/1000NM): Stage 1 and 2 Maps for ethanol blends of 30%+

N13:
Stage 1 (up to 200HP/280NM, 93oct/98RON)
Stage 2 (up to 235HP/350NM, 93oct/98RON)
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MHD+ Custom Code: Live Tuning - On The Fly Map Switching - On The Fly Exhaust Flap Control - Anti Lag - Flex Fuel - Single Bank - KnockCEL - No Lift Shift - Shift Brap - Full Motiv ReFlex 2 Way CANBUS integration with DME PI control
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Full Data Logging and Live Gauges: Monitor your engine behavior to make sure it is running perfectly using a configurable and very responsive gauge layout. 50+ engine parameters are available at a glance!
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These flash options can be applied to any map directly through the app:

- Anti Lag (N55/S55/N13 only at the moment)
- Exhaust Burble (duration & aggressiveness, min/max speed, min/max rpm)
- Remove top speed limiter (Vmax)
- Cold start noise reduction
- Exhaust flap open in sport mode
- Limit power per gear
- XHP TCU flash support (optimized OTS maps)
- Sport cooling mode for increased water / air intercooler cooling
- and many more
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Check out our homepage / user manual for more information, supported cars and recommended modifications for each stage.

Ratings and reviews

The tune is great, super smooth and really powerful. It's awesome to be able to easily load a tune at home. I've had tunes loaded by shops on other cars and it meant spending hours in their waiting room while they fumbled around figuring out software and talking to the tuning company. This took me about 5 minutes of actual work and 40 minutes of wait time, at home, where I could have a beer and do other things. Flawless process and performance.

Wonderful app with plenty of features to let you customize everything to your liking. Note on the usefulness of the "monitoring". This is by far the best live monitoring I've seen on any mobile application, with multitudes of options (e.g., trans temps, cyl. correction, coolant temp). Highly advise buying the mhd specific wifi dongle before first use, it will speed up your data process by a lot. All while giving you wire free capabilities.

Works great but there is a bug with at least stage 1 tunes where if you select automatic WITH fix for 2nd and 6th then the sport displays do not show new higher maxes like if you select just regular auto transmission. for example with the fix, the max torque readout is 360ft lbs but selecting regular auto without fix shows 400ft lbs max, please fix!

What’s new

- Misc bug fixes and app improvements.