500+ pro workshops in Europe

IMMO OFF, DPF, EGR, AdBlue, Stage 1
automatic in 1 click

MasterX Pro: the software tuners use every day in the workshop.
ECU Solutions · IMMO OFF · DTC OFF · Stage 1 · MapX · A2L · ISN BMW
912 ECUs DPF · EGR · AdBlue · Lambda · CAT… · 450+ Stage 1 · 400+ IMMO OFF · 597 DTC OFF
All automatic solutions in 1 click

Pays for itself on your 1st client job Plans from €599/year — see all options on the licenses page
View licenses Explore the software
Instant activation Secure Stripe payment Weekly updates
★★★★★ 500+ active technicians · industry-leading pro software
Discover the modules
0 ECUs DPF · EGR · AdBlue
0 ECUs Stage 1 automatic
0 ECUs IMMO OFF
0 ECUs DTC OFF
0 ECU files on server
MapX · Focus

MapX: edit your maps like an expert

Automatic detection, Virtual Dyno, table-by-table editing. 7 steps that showcase the power of MapX.

01
Import

Import your ECU file

Drag or select your ECU dump file. MapX accepts all professional formats: .bin, .ori, .mod, .hex, .map. Local and secure reading.

.bin.ori.mod.hex.map
MapX — ECU file import
Step 1 — Import
02
Auto detection

Automatic ECU detection

MapX instantly identifies the ECU type and loads the matching patterns. Track progress in real time: Reading binary → Detecting ECU → Loading patterns → Searching maps → Analysis complete.

Reading data ECU type Patterns
MapX — ECU detection EDC17C46
Step 2 — EDC17C46 detected
03
Virtual Dyno

Virtual Dyno · Stock power & torque

MapX automatically generates a Virtual Dyno from the ECU file. View the stock torque and power curve before any modification. Ideal for documenting before/after results.

305 NmMax torque @ 2300 rpm
130 HPMax power @ 4000 rpm

100+ maps detected: Driver Wish · Turbo · Injection · Rail Pressure · Lambda · Limiters...

MapX — Virtual Dyno
Step 3 — Stock Virtual Dyno
04
Maps

Access map tables

Open any detected map. MapX displays 16×8, 16×16 with real axes (RPM, Pressure, Pedal...) and values in real physical units (Nm, mg/str, %).

E.g.: Driver Wish Torque 16×8 @ 0x42858 — Y: Engine RPM / X: Pedal position (%) / Z: Torque Nm

MapX — Table cartographie
Step 4 — 16×8 table open
05
Selection

Precise zone selection

Select cells to edit by click or drag. Selected zones are highlighted in cyan blue for immediate visual identification. Multi-select and full column/row selection.

MapX — Selection zones
Step 5 — Zones selected
06
Editing

Smart one-click editing

Right-click → context menu with preset options: +10 / +50 / -10 / -50 or multipliers ×1.1 (+10%) · ×1.2 (+20%) · ×1.5 (+50%). Or "Custom" for an exact value.

+10 +50 -10 -50 ×1.1 +10% ×1.2 +20% ×1.5 +50% Custom
MapX — Edit menu
Step 6 — Edit menu
07
Result

Result · Modified values visible

Modified cells turn cyan/turquoise: differences are immediately visible compared to the original. Export the modified file (Download Modified File) or the MapPack to send to your client.

339.9 → 407.9Max torque Driver Wish (+20%)
Get a MapX license
MapX — Modified values
Step 7 — +20% torque applied
Chosen by pros who deliver

The toolkit real workshops already use

The ECU market no longer tolerates guesswork. Your clients demand results — fast, with no comebacks. MasterX isn’t just another tool: it’s what serious workshops have already adopted to stay ahead. The real question isn’t "is it worth it?" — it’s "how much longer will you work without it?"

For workshops & pros

Your clients don’t come back for excuses. They come back for clean results: emissions handled, performance delivered, IMMO cleared first time. MasterX gives you that level of execution without stacking 4 tools, 3 subscriptions, and 2 subcontractors. Handle more jobs, faster, with fewer mistakes. Your margins breathe — and so does your schedule.

For enthusiasts & independents

Tired of paying an external tuner every time a file is unusual? MasterX gives you independence: you open, understand, and write files yourself. No more black box, no more queue, no more fees to a colleague. Your expertise and profit stay with you.

Do the honest math

How many hours did you lose last month on a file nobody around you could unlock? How many clients went elsewhere because you were "not equipped"? MasterX pays for itself on the first jobs. Everything after that is net profit in your pocket — not your better-equipped competitor’s.

A human on the line. Not a chatbot.

You’re never alone with a difficult file. Our team of 5 experienced pro tuners is available 24/7 for edge cases: stuck read/write, rare ECU, tricky electronics. No anonymous tickets, no endless queue, no "please hold". A human who answers, understands, and solves.

Stuck on a file, unsure about a case, need a custom solution: we aim for resolution and knowledge transfer. You leave with the answer — and what you need so you won’t have to ask again.

5 pro tuners on call Files & custom requests ECU & electronics support

The software at a glance. Every section serves a real use case.

  • Home & navigation: everything centralized, license status, direct tool access
  • ECU Solutions: embedded solutions cleanly activated on the ECU
  • Immo Off: immobilizer on flash & EEPROM, secure workflows
  • Server files: ECU file database for fast handling of common cases
  • MapX: visualization, mapping, precise table adjustments
  • Support solution: direct exchanges with the team on your specific requests
  • Other tools (TPROT, SAFE VAG, read protection removal, etc.): targeted functions when the case requires it
  • A2L Translator, BMW ISN module: pro tools to go further on labels and BMW immobilizer

A tool that keeps up with the market — not frozen software

The ECU market moves every week: new ECUs, new protections, new edge cases. MasterX keeps pace with weekly updates, fresh calibrations, and new features. While other tools gather dust, yours stays current. That’s what separates an investment from an expense — and a workshop that lasts from one that closes.

View plans & license
Features

Everything MasterX does for you

Complete software covering every need of professional ECU tuning

● Core feature

IMMO OFF · Immobilizer Removal

Remove electronic immobilizer via Flash, EEPROM, or both combined in seconds. Compatible with major families EDC15, EDC16, EDC17, MED17, MEVD17, ME7, ME9, SID, and more.

  • Via direct Flash reprogramming
  • Via EEPROM read/write
  • Combined Flash + EEPROM mode
  • Extended multi-brand compatibility
  • Automatic backup before modification
500+ IMMO-compatible ECUs

DPF OFF · Diesel Particulate Filter

Software DPF/FAP removal. Eliminates forced regenerations, fault codes P2002/P2463, and power loss from clogging. Track use only.

Diesel

EGR OFF · Exhaust Gas Recirculation

Complete EGR valve and circuit deactivation. Improves performance, reduces oil consumption, and clears EGR-related faults. Diesel & petrol.

Diesel & Essence

AdBlue OFF · SCR System

Full AdBlue/SCR Euro 6 neutralization. Removes warnings, level alarms, and start limitations linked to the SCR system. Track vehicles only.

Euro 6

Stage 1 / 2 · Performance

Multi-level performance remapping. Optimizes turbo pressure, injection curves, torque, and power for measurable, repeatable gains.

Performance

Advanced Removals

CAT OFF · Lambda OFF · EVAP OFF · MAF OFF · Flaps OFF · TVA OFF · O2 OFF · VSA/Vmax OFF · DTC OFF. All removals available in a single software.

Multi-solutions

Built-in Pro HEX Editor

Advanced hex comparator with real-time modified byte visualization. Instantly identify every change between the original and processed file.

Pro Tool

65,000+ Cloud Files

Instant access to a massive database of ready-to-use ECU files. Instant search by reference, brand, model, or ECU number.

Cloud Server
Built-in tool

Professional HEX Editor

View every modified byte in the ECU file in real time. Total transparency.

Built-in HEX Comparator

MasterX includes an advanced hex comparator that lets you see precisely every modified byte in the ECU file. You see exactly what changes, byte by byte.

  • Real-time visualization Every modified byte is highlighted immediately
  • Original vs Modified view Side-by-side comparison of differences
  • Automatic Backup Backup of the original file before any modification
  • Signature Search Automatic identification of zones to modify
  • Export & Rapport Full modification report in PDF
EDC17CP20_IMMO_OFF_0281017689.bin
ModifiedOriginal
 3 bytes modified 512 KB Offset: 0x1A3F — 0x1A41 Validated

"Le support répond en quelques minutes seulement, même sur les cas tordus. C'est rare. Avant MasterX je passais des heures sur certains IMMO OFF, maintenant c'est expédié dans la journée. Indispensable au quotidien."

"Support replies in just a few minutes, even on tricky cases. That's rare. Before MasterX I used to spend hours on some IMMO OFF jobs, now it's done within the day. A daily essential."

JM
Jean-Marc D. ECU Technician · Independent garage, Lyon

"Les solutions automatiques sont performantes et complètes, ça couvre vraiment tout ce dont j'ai besoin au quotidien. Et si jamais un cas me résiste, le support reste disponible pour épauler. J'adore !"

"The automatic solutions are powerful and complete, they really cover everything I need on a daily basis. And if a case ever gives me trouble, support is always available to back me up. Love it!"

KA
Karim A. Remapping Expert · Brussels, Belgium

"J'ai acheté MasterX uniquement pour faire un DPF OFF sur un Citroën MD1CS006 que personne dans le coin ne savait débloquer. Une seule intervention et le logiciel était totalement remboursé, plus le bénéfice par-dessus. Un an plus tard je l'ai toujours et je m'en sers tous les jours. Incroyable !"

"I bought MasterX just to do a DPF OFF on a Citroën MD1CS006 that nobody around me could crack. A single job, and the software was fully paid back, with profit on top. One year later I still have it and I use it every day. Incredible!"

SR
Sébastien R. Mechanic · Performance Workshop, Marseille

"J'utilise ce logiciel depuis le début, il colle parfaitement à mon quotidien. Je m'en sers pour l'IMMO, les solutions ECU, l'extraction de pin, l'identification logiciel, et bien sûr le support est top. Continuez comme ça !"

"Using this software from the beginning, fits perfectly with my daily job. Use it for IMMO, ECU solutions, pin extraction, software identification, and of course support is great. Keep up the good work!"

MS
Marco S. ECU Tuner · Milan, Italia

"Ce logiciel n'a pas d'équivalent. Vous faites un travail incroyable. Merci."

"This software is second to none. You are doing an amazing job. Thank you."

LH
Lukas H. Independent ECU Specialist · Hamburg, Deutschland

"Aujourd'hui vous m'avez sorti une grosse épine du pied : IMMO OFF sur un SID 305, sans aucune manipulation à faire. La voiture a démarré tout de suite. Merci !"

"Today you solved a big problem for me. IMMO OFF on a SID 305, without any operation to do, car started immediately. Thanks!"

JT
James T. Performance Workshop · Manchester, UK

"De mon côté, je tiens à dire que l'application a énormément évolué. Honnêtement, je ne m'attendais pas à de tels progrès en si peu de temps. J'utilise le logiciel régulièrement, voici quelques véhicules récents que j'ai traités avec MasterX."

  • 01 Mar 2026
    Citroën MD1CS003AdBlue OFF + DPF OFF, solution automatique. Rien débranché. 100 % opérationnel.
  • 01 Mar 2026
    Mercedes CRD3DPF OFF, solution automatique. 100 % opérationnel.
  • 03 Mar 2026
    Citroën S2000CAT OFF avec aide du support. 100 % opérationnel.
  • 03 Mar 2026
    Citroën MD1CS003DPF OFF, solution automatique. 100 % opérationnel.
  • 04 Mar 2026
    VAG EDC17C74Stage 1 + EGR OFF + DPF OFF, solution automatique. Joli gain de puissance, mode dégradé disparu. Un limiteur turbo n'avait pas été modifié comme prévu, le support a corrigé rapidement.
  • 07 Mar 2026
    VAG MD1CP004IMMO OFF + DPF OFF via support. Démarrage sans rien débrancher. Le client cherchait un kit de démarrage complet depuis presque 6 mois.
  • 08 Mar 2026
    BMW EDC16C35IMMO OFF, solution automatique avec aide du support. Le véhicule a démarré correctement. Un voyant restait allumé mais c'était un capteur de clim, sans rapport avec l'IMMO OFF.
  • 09 Mar 2026
    Renault DDCRIMMO OFF, solution automatique. Fonctionne très bien. Voyant clignotant au début, le support a fourni une procédure EEPROM et c'est reparti sans aucun défaut.
  • 10 Mar 2026
    BMW EDC1706DPF OFF + 2 DTC OFF liés au CAN, solution automatique. Plus aucun défaut, mode dégradé disparu.
  • 12 Mar 2026
    Mercedes MD1CP001EGR OFF, solution automatique. Le DTC restait au début. Procédure standard : reset, relire, ré-appliquer. Le voyant s'est éteint et les logs ne montrent plus aucune activité EGR.
  • 13 Mar 2026
    Citroën S2000DTC sonde O2 OFF, solution automatique. Code effacé, mode dégradé parti.
  • 15 Mar 2026
    Peugeot SID804IMMO OFF, solution automatique. Démarré au premier coup de clé.

"Je continuerai à poster ce que je traite le mois prochain pour la transparence. Personnellement je ne regrette pas mon achat. Pour l'instant les résultats sont vraiment positifs de mon côté."

"From my side I would like to say that the application has evolved a lot. Honestly I did not expect such progress in such a short time. I have been using the software regularly, here are some recent vehicles I completed with MasterX."

  • 01 Mar 2026
    Citroën MD1CS003AdBlue OFF + DPF OFF automatic solution. Nothing unplugged. Working 100%.
  • 01 Mar 2026
    Mercedes CRD3DPF OFF automatic solution. Working 100%.
  • 03 Mar 2026
    Citroën S2000CAT OFF with support. Working 100%.
  • 03 Mar 2026
    Citroën MD1CS003DPF OFF automatic solution. Working 100%.
  • 04 Mar 2026
    VAG EDC17C74Stage 1 + EGR OFF + DPF OFF automatic solution. Good power gain, limp mode gone. One turbo limiter was not modified as expected, support corrected it quickly.
  • 07 Mar 2026
    VAG MD1CP004IMMO OFF + DPF OFF via support. Vehicle started without unplugging anything. The client had been searching for a full start kit for almost 6 months.
  • 08 Mar 2026
    BMW EDC16C35IMMO OFF automatic solution with support help. Vehicle started correctly. A warning light remained but it was an A/C sensor, not related to the immo off.
  • 09 Mar 2026
    Renault DDCRIMMO OFF automatic solution. Working well. A blinking light appeared at first, support provided an EEPROM procedure and it disappeared with no fault codes.
  • 10 Mar 2026
    BMW EDC1706DPF OFF + two CAN-related DTC OFF, automatic solution. No more fault codes, limp mode gone.
  • 12 Mar 2026
    Mercedes MD1CP001EGR OFF automatic solution. DTC remained at first. Standard procedure: reset, read again, apply. Warning gone, logs show no EGR activity anymore.
  • 13 Mar 2026
    Citroën S2000O2 sensor DTC OFF automatic solution. Fault code removed, limp mode gone.
  • 15 Mar 2026
    Peugeot SID804IMMO OFF automatic solution. Vehicle started on the first key turn.

"I will continue posting what I complete next month for transparency. Personally I do not regret my purchase. So far the results have been very positive on my side."

TW
Tom W. Mobile Tuner · Birmingham, UK

"J'ai testé la solution IMMO OFF sur une Aygo 1.0 ME7.9.5 et ça marche parfait...... Très bon......"

"I test the immo off solution in an aygo 1.0, me7.9.5 and works perfect...... Very good......"

SM
Stavros M. ECU Mapper · Athens, Greece

"Je suis là depuis le tout début. L'évolution de cet outil est impressionnante. Bravo les gars."

"I've been here since the beginning. The evolution of this tool is impressive. Well done guys."

PV
Pieter V. Dyno Tuner · Rotterdam, Nederland

"J'ai reçu mon premier déverrouillage par correspondance avec Autotuner pour un MD1CP001 W447 2021, et ensuite le problème d'AdBlue a été résolu avec MasterX. Le fourgon roule à nouveau sans souci d'AdBlue."

"I got my first unlock through Autotuner correspondence for an MD1CP001 W447 2021, and after that the AdBlue issue was solved with MasterX. The van runs again with no AdBlue trouble."

OM
Olivier M. Engine Tuner · Geneva, Switzerland

"J'apprécie le développement de ce logiciel de réglage et d'édition calculateur, et je dois dire que l'équipe a fait des progrès incroyables. Les améliorations apportées au logiciel et aux solutions de calibrage sont impressionnantes. Avec ce niveau d'implication et de constance, ce projet est devenu l'une des meilleures solutions du marché. Merci pour cette mise à jour."

"I really appreciate the development of this ECU tuning and editing software, and I have to say the team has made incredible progress. The improvements to the software itself and to the calibration solutions are impressive. With this level of dedication and consistency, this project has become one of the best solutions out there. Thanks for the update."

PL
Pascal L. ECU Specialist · Toulouse, France

"DTC OFF fonctionne parfaitement pour ma Citroën C1 Sagem S2000."

"DTC OFF works perfectly on my Citroën C1 Sagem S2000."

MG
Mathieu G. Specialist Mechanic · Bordeaux, France

"Une nouvelle mise à jour dont je suis très satisfait."

"Another update I'm really happy with."

AB
Antoine B. Independent workshop · Nantes, France

"Bon outil."

"Good tool."

HA
Henrik A. Garage Owner · Stockholm, Sverige
FAQ

Frequently asked questions

Answers to the questions professionals ask before adopting MasterX

MasterX is compatible with all major professional interfaces: K-TAG, KESS V2/V3, ByteFlasher, CMD Flash, Alientech, MPPS, PCMFlash, Byte, and more. It supports direct OBD2 reads, BDM, JTAG, and Boot Mode depending on the ECU.
The MasterX license is registered to you and linked to your professional account. Contact support for exact terms based on your plan (Annual, Annual+, Ultimate+). Our plans are designed for flexible professional use.
Yes. All plans include software updates and continuous addition of new ECU solutions. The 65,000+ file database is updated regularly. Annual+ and Ultimate+ plans get early access to updates before general release.
Support is available via email and WhatsApp. Annual+ includes standard technical support. Ultimate+ gets priority 24/7 support with faster response times. The Annual License (€599) does not include technical support.
Buy online via Stripe (buttons above) or fill out the contact form. After payment, your license is activated instantly with full access. A confirmation email with your credentials is sent immediately.
MasterX is optimized for Windows 10 and Windows 11 (64-bit). It can be installed on a laptop or desktop dedicated to tuning. Contact support for questions about minimum required configuration.
MasterX automatically backs up the original file before every modification. This backup is stored locally and in your cloud space. You can restore the original anytime in one click from the software interface.
Contact

Contact our team

Our technical team responds quickly to any question or MasterX license request

Get your MasterX license

Fill out the form or contact us directly. Our team reviews your professional profile and recommends the plan best suited to your volume and needs.

Email masterxresolve@gmail.com
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