Tune your engine with your Android or iOS device

MHD Tuning APP

MHD Flasher is the first Android and iOS handheld application to bring ECU tuning and monitoring to the BMW N54, N55, S55, B58, S58, S63 and N13 engine.
The MHD Flasher reveals the immense margin of power BMW left on the table with the N54, N55, S55, B58, S58, S63 and N13 motor, while still retaining the sophistication of the original engine management program.

Easy to install

Connect any compatible Android device to your car using or MHD Wireless Adapter or a KDCAN Cable. The first install takes only 2.5-12* minutes and any map or option change later just 19s – 1.5 minutes*.

*flash times vary depending on car, engine type and adapter used.
*flash times with KDCAN cable are around 15-40min (initial installation) , 1-8min (map switch)

Keep an eye on the tuning

Monitor your engine behavior using a configurable gauges layout to keep an eye on any of the 50+ engine monitors like oil temp, boost pressure, actual load or individual cylinder ignition timing. Activate the logging mode to save up to 30 monitors to a standard CSV file for later analysis. Track issues by reading the error codes, and delete them once resolved.

Easy Reset

Flash your ECU back to a stock anytime, as often as you need to. No ECU backup is needed. You can also reset various engine adaptions with MHD.

Custom Tuning Support

As an alternative to built-in maps, many tuners can provide advanced custom mapping for those who have higher or special performance needs.

Custom Flash Options

Individual Exhaust Burble

Set your desired exhaust burble (duration, aggressiveness, min rpm, min speed) and enjoy the sporty sound of your N13 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 3 minutes, after MHD is installed.

Top Speed Limiter Removal

Remove your OEM top speed limiter.

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.

C.S & G.T.S options

G.T.S & C.S DCT transmission software flash (included in flasher license)
G.T.S (500HP) & C.S (460HP) engine style maps (included in flasher license)
G.T.S style startup roar

Free updates

More flash options are in development and will be released frequently

Sport Cooling Mode For Intercooler & Sport / Race Cooling Mode For Coolant

Optimizes the cooling for better air intake temperature on the B58 water to air intercooler.
Reduces the coolant temperature for better performance, lower oil temperature and less engine stress.

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