# MHD Flasher N54

> Read/clear engine codes, analyze datalogs, and manage vehicle licenses. (iPhone/iPad app by MHD Tuning UG (haftungsbeschraenkt).)

- Source: https://appshunter.io/ios/app/mhd-flasher-n54/id1445162440 (this page in markdown: same URL + `.md`)
- Developer: [MHD Tuning UG (haftungsbeschraenkt)](https://appshunter.io/developer/1445162439)
- Category: Utilities, Sports
- Price: Free
- Rating: 4.60/5 from 174 App Store ratings · 69 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.2 · 134 MB
- Released: 2020-05-14
- Data updated: 2026-08-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/mhd-flasher-n54/id1445162440/reviews.md

## What is MHD Flasher N54?

This app is being retired.  Please switch to our unified "MHD Flasher" app which now supports all E/F/G series vehicles / engines as well as Supra.

This app will remain as a shell to help you switch over.  Additionally, some functionality will remain to read and clear engine DTC error codes, graph and analyze your prior datalogs, view your existing vehicle licenses, and access the user guide!

## Key features

- Read engine DTC error codes
- Clear engine DTC error codes
- Graph datalogs
- Analyze datalogs
- View vehicle licenses
- Access user guide

## Recent user reviews (10 of 69)

All indexed reviews: https://appshunter.io/ios/app/mhd-flasher-n54/id1445162440/reviews.md

### 3/5 — Mappa

*2026-05-06, version 3.21*

Dovrebbero mettere la lingua in italiano ! Del resto e ottimo.

### 5/5 — 335 i

*2026-04-23, version 3.21*

Single turbo io ce lo sono n1 a mappare n54 invece s55 non sono contento devono finirla bene la mappa  i componenti che uno monta non sono sfruttati bene parlo del Intercooler e aspirazione frontale

### 3/5 — If you have a n54 go with another tuner

*2025-08-26, version 3.21*

Us n54 guys get no love from mhd anymore guess they forgot about us

### 5/5 — DONT UPDATE DONT SWITCH

*2025-01-28, version 3.21*

The new mhd flasher app simply doesn’t work. 7 failed flashes on it prove that, all with different cables or power sources. This one still works first try. Don’t update and don’t switch if you like being able to drive

### 5/5 — Mhd Tuning App

*2024-12-31, version 3.20*

The app is easy to use and functions are straightforward. It’s so nice being able to flash your DME through your phone. The process is simple too. No complaints yet.

### 5/5 — DriftVitals

*2024-12-24, version 3.20*

Best-tuning platform for BMW

### 5/5 — Fantastic

*2024-05-27, version 3.20*

Best code reader there is for the engine ECU. The included maps are excellent. The data logging is reliable.

### 4/5 — e46

*2024-04-24, version 3.20*

pls make one for m54 for the e46

### 2/5 — Idle missfire

*2023-09-16, version 3.20*

I think mhd is a great product I have both the Cobb accessport and mhd n54 and I have to say after comparing the 2 the idle on my Cobb map is much much smoother… 

Everything is brand new plugs injectors no boost leaks… and for some reason with v10 map I’m experiencing idle hiccups… I’m very disappointed with the idle on these maps and needs fixing asap

### 1/5 — Mhd

*2023-07-26, version 3.20*

Pas en français on comprend pas l’anglais donc compliquer de l’acheter

## Frequently asked questions about MHD Flasher N54

### What does the MHD Flasher N54 app do?

This app allows you to read and clear engine Diagnostic Trouble Codes (DTCs), graph and analyze your past datalogs, and view your existing vehicle licenses. It also provides access to the user guide.

### Is this app still supported?

This app is being retired and will remain as a shell to help users switch to the unified "MHD Flasher" app. The unified app supports a broader range of vehicles and engines.

### What are the main features of this app?

Key features include the ability to read and clear engine DTC error codes, graph and analyze your prior datalogs, and view your existing vehicle licenses. You can also access the user guide.

### How much does MHD Flasher N54 cost?

Based on the provided information, this app is free to use. It does not have in-app purchases or ads.

### What vehicles is this app compatible with?

This specific app is designed for vehicles with the N54 engine. However, users are encouraged to switch to the unified "MHD Flasher" app which supports all E/F/G series vehicles/engines, as well as Supra.

## Version history (last 5 releases)

### 3.21 — 2025-01-02

- 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.

### 3.20 — 2023-01-14

- Added OTS Multimap for V8/9/10.
- Added per map burble flash options for multimap.
- Added Single Bank fueling flash option for single turbo cars (see notes in-app).
- Added 3-port MAC control flash option (see notes in-app).
- Updated UNI firmware with multiple improvements.

### 3.12 — 2022-12-13

- Added flash option for NXM Oil Pressure.
- Added ability to start app on logging screen.
- Fixed airflow error code on I8A0S v10 maps.

### 3.10 — 2022-09-14

- Misc connectivity bug fixes.

### 3.09 — 2022-08-30

- Further improvements to burble settings.
- Further improvements to throttle lift smoothness.
- Lambda / throttle oscillation fix moved to separate flash option once "aftermarket DP" is selected.
- Fixed license issue with FlexFuel enabled BEF.
- Misc other bug fixes, please reflash your current tune.

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## More apps by MHD Tuning UG (haftungsbeschraenkt)

- [MHD Flasher](https://appshunter.io/ios/app/mhd-flasher/id1468182144)
- [MHD N55 E-Series](https://appshunter.io/ios/app/mhd-n55-e-series/id1502611398)

All apps by MHD Tuning UG (haftungsbeschraenkt): https://appshunter.io/developer/1445162439

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-04.*
