MHD Flasher F-Series S55 App Icon

MHD Flasher F-Series S55

The MHD Flasher F-Series is a complete flash tuning app for your BMW. 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.

You can install MHD right at home and start tuning immediately! There is no need to remove and send out your DME for a costly “unlock.” Simply download the MHD Flasher F-Series app that connects via a K+DCAN cable to your Android device and your vehicle’s OBD-II port, start the app, and within 25 minutes the initial installation is complete. Further map changes are much faster – only 3 minutes! You can revert your vehicle to the factory OEM flash at any point, and no initial backup is necessary

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+ (in development)

up to 585HP/850NM

E85 Mix Maps

For Ethanol blend of 30%-50%, Stage 1 & Stage 2

E30/E50 (in development)



Supported Vehicles

M3 F80 S55
M4 F82 S55
M4 F83 S55
M4 GTS F82 S55

Custom Flash Options

Individual Exhaust Burble

Set your desired exhaust burble (duration) 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.

GTS Options (in development)

GTS DCT transmission software flash.

GTS differential software flash.

MHD Prices

Flasher Module

$299 / 299€

Monitor Module

$99 / 99€

Map Pack

$149 / 149€ (each)