MHD Flasher Module for S55

The Flasher Module unlocks the ability to flash with MHD (MHD OTS maps, JB4 backend maps and custom maps) 

1. Quickest flash times on market with our MHD WIFI Adapter (3.5 min initial, 19 sec map switch) 
2. CS / GTS style engine maps maps included 
3. CS / GTS style transmission flash included
3. Stage 0 stock power (all flash options can be added)
4. Reading & Deleting engine codes + Adaptions reset 

Available flash options: 
- Exhaust burble (Duration base and sport mode, aggressiveness, min. speed, min. rpm) 
- Startup roar
- Cold start noise reduction 
- Exhaust flap always open in sport mode 
- Top speed limiter (Vmax) removal 
- Limit power per gear in percent (1st - 5th gear)
- Adjustable rev matching for 6MT (eco, sport, sport plus)
- Support for precision race works coils 
- OPF / GPF delete / Cat delete

Supported Devices:

  • Apple iOS 10.2 and higher
  • Android 4.4 and higher

Supported Adapters / Cables:

  • MHD WIFI Adapter (recommended for iOS & Android)
  • KDCan Cable + OTG Adapter (Android only)
  • ENET Cable + Lightning Adapter (iOS only)

Supported Cars: 

  • M3 S55 F80 2014 - 2019
  • M4 S55 F82 2014 -
  • M4 S55 F83 2014 -
  • M2 Competition S55 F87 2018 - *
*M2C with newest BMW software require a DME bench unlock in order to unlock OBD flashing!

MHD OTS Maps by PureBoost

We offer a wide selection of OTS maps for the S55 engine suitable for many different vehicle modifications and octane levels. They have been extensively road and dyno tested, just flash and go!


431HP-500HP (GTS)

Stage 1 Maps

91oct/95ron, 93oct/98ron, 95oct/102ron, for stock cars.

Stage 1

up to 530HP/700NM

Stage 2 Maps

91oct/95ron, 93oct/98ron, 95oct/102ron, for cars equipped with high-flow downpipes

Stage 2

up to 560HP/780NM

Stage 2+

up to 575HP/850NM

E85 mix maps

For Ethanol blend of 30%+ ST1, ST2, ST2+


up to 580HP (ST2+)

Supported Vehicles

2014 - 2019
M3 F80 S55

2014 - 2020
M4 F82 S55

2014 - 2020
M4 F83 S55

M4 GTS F82 S55

2018 - 2020
M2 Competition F87

Custom Flash Options

Individual Exhaust Burble
Set your desired exhaust burble (duration, aggressiveness, min rpm, min speed) and enjoy the sporty sound of your S55 powered BMW.

Cold Start Noise Reduction
Suppresses the raised idle rpm at cold start phase.

Fast Map / Option Switching
Switch between your flash options, OTS Maps and Custom-Maps in just 3 minutes, after MHD is installed.

Free updates
More flash options are in development and will be released frequently.

Limit Power Per Gear
Limit the power per gear (1st -5th gear) to your desired level.

Adjustable Exhaust Flap Settings
Exhaust flap always open in sport / sport plus for maximum engine sound

Top Speed Limiter Removal
Remove the stock top speed limiter and enjoy the unlimited top speed from your car.

C.S & G.T.S options
G.T.S & C.S DCT transmission software flash (included in flasher license)

G.T.S (500HP) & C.SW (460HP) engine style maps (included in flasher license)

G.T.S style starup roar