Free

Details

Released
May 14, 2020
Updated
October 28, 2026

Features

MHD Flasher screenshot #1 for iPhone
MHD Flasher screenshot #2 for iPhone
MHD Flasher screenshot #3 for iPhone
MHD Flasher screenshot #4 for iPhone
MHD Flasher screenshot #5 for iPhone
MHD Flasher screenshot #6 for iPhone
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About

This app allows BMW owners to remap their vehicle's engine control unit for enhanced performance and drivability. It offers full OBD flashing, various performance maps, and real-time engine monitoring. Users can also customize flash options like burble and Vmax removal.

✓Complete DME remapping
✓Full OBD flashing
✓Multiple performance map stages
✓Real-time engine parameter monitoring
✓Customizable flash options
✓Supports various BMW engine types
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What users say about MHD Flasher

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+3

What's New in MHD Flasher

5.37

October 28, 2026

- Fixed various app bugs / crashes.

User reviews

Selber Schuld wer nicht MHD auf seinen BMW nutzt!

M4 G82 / S58

Für mich die einfachste und sicherste Tuning-Lösung überhaupt. Du kannst jederzeit dein Tuning selber nach belieben anpassen und aufs Auto flashen, mit unglaublich vielen verschiedenen Möglichkeiten und Einstellungen. Dazu Mapswitching mit bis zu 4 verschiedenen Maps direkt während der Fahrt. So kann man sein Setup jederzeit an die jeweilige Situation anpassen.

Dazu kommen regelmäßige Updates und ein schneller, hilfreicher Support, wenn man mal Fragen oder Probleme hat. Man merkt einfach, dass hinter MHD ein Team steckt, das ständig weiterentwickelt und auf seine User eingeht.
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Excellent tuning app and outstanding customer support

I contacted MHD with a few technical questions about Stage 2 and Stage 2+ on my S55 engine. Their team responded quickly, clearly, and honestly. They didn’t try to sell me unnecessary upgrades—instead, they explained exactly what made sense for my setup and fuel quality.

It’s rare to find this level of transparency and technical knowledge. The app works great, the tuning is reliable, and the support is first-class.

Highly recommended!
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For b58 better off getting mg flasher

Comparing the mhd b58 stage 2.5map 95oct with the mg flasher b58 stage 2.5map 95oct, the mg flasher has better throttle response , faster turbo spool , cleaner logs with no timing corrections.

Error

S63 X6M F86, After the update, when loading the map, 2 errors appear! Please fix this in the stock

S55

Ci vuole nuovo aggiornamento s55 bootmod3 passerò a loro vanno più forte di mhd

Developer apps

User experience

🐞

Reported Bugs

16 issues

App crashes on iOS 26.2 and newer versions

Bug

Unable to flash after recent updates

Bug

Unable to erase memory errors

Bug

App fails to open after installation

Bug

Connection constantly disconnects on N55 F30 platform

Bug

Unable to upload logs to SpoolStreet

Bug

Cannot edit burples settings after update

Bug

Failed flashes (7+ consecutive failures reported)

Bug

Invalid credentials error on new device login

Bug

Monitor license not functioning

Bug

Anti-lag feature cannot be removed once flashed

Bug

Lumpy cold start with startup roar enabled

Bug

WiFi adapter disconnects during mapping

Bug

Unable to prepare memory section errors

Bug

User guide PDF crashes app

Bug

Missing custom tunes after app migration

Bug
✨

Requested Features

11 requests

Add 94 octane fuel option

Feature

Support for diesel engines

Feature

Support for N63 engine tuning

Feature

Max cooling fan option in new app

Feature

Ability to change login email/username

Feature

License transfer capability for car sales

Feature

Support for Gen 2 B58 with MHD+ features

Feature

Ability to revert to previous OTS map versions

Feature

Detailed release notes for OTS map updates

Feature

Custom tune file transfer to new app

Feature

Burbles setting in regular mode (not just sport mode)

Feature

FAQ

How long does it take to flash my BMW with MHD Flasher?

Initial installation of MHD Flasher takes approximately 4 minutes. Subsequent map changes are significantly faster, typically completing in just 20 seconds.

Can I revert my BMW to its factory settings using MHD Flasher?

Yes, you can revert your vehicle to the factory OEM flash at any point using MHD Flasher. No initial backup of your original tune is necessary.

What types of performance maps are available in MHD Flasher?

MHD Flasher offers various 'Off The Shelf' (OTS) maps, including Stage 1, Stage 2, Stage 2+, and Ethanol Mix Maps (E20, E30) for different BMW engine models like N55, S55, and B58.

What engine parameters can I monitor with MHD Flasher?

MHD Flasher provides over 50 engine parameters at a glance, including Boost, Lambda (AFR), Intake Air Temp, Ignition Timing, Coolant Temperature, Oil Temperature/Pressure, and many more advanced monitors.

Does MHD Flasher have ads?

No, MHD Flasher does not contain advertisements.

What is the user sentiment for MHD Flasher?

User sentiment for MHD Flasher is mixed. While users praise its fast flashing speeds, performance gains, and comprehensive monitoring, recent reviews highlight issues with app crashes, stability, and customer support responsiveness.

Is MHD Flasher compatible with all BMW models?

MHD Flasher supports specific E-Series vehicles (135i, 335i, 535i, Z4 35i/is) and F8x M3/M4 models. It also supports B58 engines. Compatibility for other models may vary or be discontinued.

What is the age rating for MHD Flasher?

MHD Flasher has an age rating of 4+, making it suitable for a wide range of users.