MHD Flasher F-Series N55 App Icon

MHD Flasher F-Series N55

The MHD Flasher F+G 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+G Series app that connects via our MHD Wireless Adapter (or KDCAN cable) to your Android device 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 30 seconds! 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 N55 PWG and N55 EWG engines suitable for many different vehicle modifications and octane levels. They have been extensively road and dyno tested, just flash and go!


306HP - 360HP

Stage 1 Maps

91oct/95ron, 93oct/98ron, 95oct/102ron, for stock cars. (not available for M2 and X4 M40i)

Stage 1

up to 370HP/520NM on EWG cars, 350HP / 520NM on PWG cars

Stage 2 Maps

91oct/95ron, 93oct/98ron, 95oct/102ron, stage 2 for cars equipped with an high-flow downpipe, stage 2+ for cars equipped with an high-flow downpipe and upgraded intercooler.

Stage 2

up to 400HP/580NM on EWG cars, 365HP / 550NM on PWG cars

Stage 2+

up to 430HP/630NM on EWG cars, 400HP / 630NM on PWG cars


Ethanol blend of 25%, for cars equipped with an upgraded intercooler and high-flow downpipe


up to 440HP/650NM on EWG cars, 410HP / 650NM on PWG cars

PureTurbos OTS Map

For cars equipped with the PureTurbos Stage 2 Turbocharger.
(pump gas only due to fuel system limitations)

up to 475HP/670 (stock fuel system limit)


Supported Vehicles

M135i F2x N55
M235i F2x N55
M2 F87 N55
335i F3x N55
435i F3x N55
535i / GT Fxx N55
640i F0x N55
740i F0x N55
X3 35i F25 N55
X4 35i / M40i F26 N55
X5 35i / 40i F15 N55
X6 35i / 40i F16 N55
All X-Drive models are supported.

Custom Flash Options

Individual Exhaust Burble

Set your desired exhaust burble (duration, aggressiveness, min rpm, min speed) and enjoy the sporty sound of your N55 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.

Top Speed Limiter Removal

Remove your OEM top speed limiter.

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

XHP TCU Flash Support

Optimized maps for XHP flashed cars.

Sport / Race Cooling Mode

Reduces the coolant temperature for better performance, lower oil temperature and less engine stress.

Free Updates

More flash options are in development and will be released frequently

MHD Prices

Flasher Module

$249 / 249€

Monitor Module

$99 / 99€

Map Pack

$99 / 99€ (each)