MHD Flasher N54 App Icon

MHD Flasher N54

MHD Flasher is the first Android handheld application to bring ECU tuning and monitoring to the BMW N54 / N55 engine. The MHD Flasher reveals the immense margin of power BMW left on the table with the N54 / N55 motor, while still retaining the sophistication of the original engine management program.

MHD OTS Maps by Wedge Performance



Stage 1 Maps

Eight maps included Stage 1 and Stage 1+ FMIC (upgraded FMIC recommended). Each with 4 octane Variants (US OCT ACN91, 91, 93, 95 / RON 93, 95, 98, 102) using a peak of 15 to 17 PSI tapering to 10-12 PSI at redline.

Stage 1

up to 360HP / 520NM

Stage 1+

up to 390HP/600NM

Stage 2 Maps

Eight maps included Stage 2 (High-Flow Downpipes) and Stage 2+ FMIC(DPs and upgraded FMIC recommended). Each with 4 octane Variants (US OCT ACN91, 91, 93, 95 / RON 93, 95, 98, 102) using a peak of 16 to 18 PSI tapering to 12-14 PSI at redline.

Stage 2

up to 380HP/560NM

Stage 2+

up to 420HP/650NM

E85 mix maps

For Ethanol blends of 25-60% targeting peak 18PSI to 14PSI (High-Flow Downpipes and upgraded FMIC + upgraded Low Pressure Fuel Pump for E40 and E60 recommended).

up to 440HP/670NM


Supported Vehicles

135i, 335i/x and 535i/x
Z4 35i/is
X6 35i

Custom Flash Options

Individual Exhaust Burble

Set your desired exhaust burble (duration & aggressiveness) and enjoy the sporty sound of your N54 powered BMW.

Cold Start Noise Reduction

Suppresses the raised idle rpm at cold start phase.

Kick-Down Deactivation

Prevents the AT/DCT transmission from downshifting when pressing the kick-down switch at full throttle.

Variable Coolant Targets

Select different coolant targets for optimized cooling and performance. Sport Mode for spirited daily driving, Race Mode for drag racing (maximum cooling).

MT Shift Bog Fix

Improves the 1-2 second lag some people experience when shifting fast (manual transmission).

Wastegate Rattle Fix

Change the position of the wastegate arms during idle/decel to mask the rattling noise.

Limit Power Per Gear

To prevent wheelspin, limit the power in the first 3 gears to your desired level.

Linear Throttle Mapping

remaps the pedal to throttle mapping for a more linear torque request than stock.

Individual Minimum Idle RPM

Select your desired minimum idle rpm speed – less rattle noise with single mass flywheels.

One click support for aftermarket parts

N20 Map sensor support, 4 Bar Map sensor support, ADV O2 Lambda sensor support, BimmerLifeTuning coil support, Precision Raceworks coil support.

Fast Map / Option Switching

Switch between your flash options, OTS Maps and Custom-Maps in just 2 minutes, after MHD is installed.