MHD N55 E-series is an app by MHD Tuning UG in the Auto & Vehicles category, listed since at least April 2021. It includes native code for ARM 32-bit and ARM 64-bit, so it runs on practically every phone.
It asks for 6 permissions, 1 of them sensitive: modify shared storage. The app offers in-app purchases through Google Play.
What's new in vversion 1.8
- Our separate N54 and N55E apps are being retired. Please switch to our unified "MHD Flasher" app. This app will remain as a shell to help you switch over.
Description
From the listing uploaded by “appupdater”.
MHD Flasher is the first Android handheld application to bring ECU tuning and monitoring to the BMW N55 engine for E series. The MHD Flasher reveals the good margin of power BMW left on the table with the N55 while still retaining the sophistication of the original engine management program.
→ Easy to install
Connect any compatible Android device to your car using a standard K+Dcan cable along with an OTG USB adapter, install one of the pre-purchased MHD maps and enjoy the power and performance benefits of the MHD maps by Twisted Tuning.
→ 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 50 monitors to a standard CSV file for later analysis. Track issues by reading the error codes, and delete them once resolved.
→ Flash your ECU back to a stock anytime, as often as you need to. No ECU backup is needed.
→ 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.
Main features description:
═══ Flasher module ═══
- Flash built-in maps (purchased separately), custom user-tuned .BIN files or JB4 flash maps.
- Provides an ever growing list of handy options like PPK exhaust burble duration or cold start noise reduction.
- Read / delete engine trouble codes.
- Reset the main DME adaptation values.
- 4 minutes map switching; initial install time: 33 mins (this will be improved later).
═══ Monitor module ═══
- Extensive logging values list, up to 50 values at the same time.
- Save logging session to .CSV files
- Integrated csv log viewer
- Up to 8 configurable gauges
═══ Optional MHD maps packs ═══
- Maps by Twisted tuning
- Stage 1 pack. Eight maps: 4 fuel octane variants, stock / upgraded FMIC variants.
- Stage 2 pack. Eight maps: 4 fuel octane variants, stock / upgraded FMIC variants. High flow downpipes recommended.
- Ethanol mix map (e30). FMIC+DPs recommended.
Supported vehicles: N55 equipped Exx series.
2010-2013 135i, 135is and 335i
2013-2015 X1 35i
2010-2013 X5 35i
2011–2014 X6 35i
This racing product is for competition closed course use only.
Required hardware:
- 1 device running Android 3.2 and up, USB OTG compatible.
- 1 K+Dcan cable. See page 5 of the user manual for a recommended cable: http://www.twisted-visionz.com/mhdguide
- 1 USB OTG cable.
Price list (licenses are VIN Locked and stored by Google along your Play store account):
- Flasher module: $199
- MHD maps packs: $49 each. Requires the Flasher module.
- Monitor module: $69
FAQ
Q: Does my Android device need to be permanently plugged to the OBD port?
A: No. Once a flash is performed you can unplug your device.
Q: Do I lose my licenses if I delete the app or the Android device breaks?
A: No. licenses are stored online by Google, you can use your purchases on another device as long as you use the same account on Play store.
Q: Do I need to purchase a new license each time I flash a map?
A: No, you can ref lash as many times as needed.
Q: Is a battery charger required?
A: It is highly recommended for long flashes (install, uninstall). A healthy battery will handle short flashes (map changes) fine but the use of a battery charger remains recommended.
Q: How can I determine if the DME is directly flashable or needs a one time bench flash?
A: got to http://www.realoem.com/bmw/enUS/select and enter the last 7 digits of your VIN in serial number. Click Browse parts the ENGINE ELECTRICAL SYSTEM and check both CONTROL UNITS > MEVD1726 section. If the it says "No parts found matching your car." you have a MEVD172 which is directly flashable.
Security & authenticity
Security rating: Trusted
Signing certificate
Signature matches the Google Play versionChecked by the source store on Jun 6, 2026.
Certificate issued to “MHD Tuning”This is the certificate of the Google Play version.
Store checks and file details
Developer signature verifiedJun 6, 2026
Validated against Google PlayJun 6, 2026
Signed byCN=Martial Dreville, OU=MHD Tuning, O=MHD Tuning, L=Berlin, ST=BE, C=DE
Uploaded by “appupdater”Gold tier · 117,810 followers · uploading since 2020
Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.
Permissions (6)
MHD N55 E-series requests 6 permissions, 1 of them sensitive.
Can I install this APK over the version I already have?
Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.
Is MHD N55 E-series free?
The APK is free to download, but the app offers in-app purchases through Google Play.
Is the MHD N55 E-series APK safe?
No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. After downloading, check that the file's MD5 is a625f4bd10fb928942366019351cd463.