Master every ECU.
Any read, any tool.

MasterX detects the ECU the instant you load a file and lights up every compatible solution — IMMO OFF, DPF, EGR, AdBlue, Stage 1 & 2 — applied in one click, with automatic checksum correction on Ultimate+.

  • The whole toolbox in one suite: automatic solutions, IMMO, Stage, MapX editor, checksum
  • Deep coverage on the ECUs pros work on daily: VAG, BMW, Mercedes, PSA, Ford, Renault…
  • Files handled in seconds, not hours. The original is auto-backed-up for one-click restore
MasterX interface, brand & ECU selection, available solutions, DTC OFF panel and live log

100% automatic solutions. Your file is processed by the software in a few seconds. Every ECU on the supported list is handled fully automatically, with no waiting and no manual processing.Every read supported: OBD · Bench · Boot · JTAG · BDM

Free, public database, checkable before you buy.

Discover MasterX See licenses
Trusted by pro tuners across Europe Licensed WinOLS® 5 user Secure Stripe checkout Windows 10 / 11
991
ECUs supported
1150
Stage 1 automatic
384
Stage 2 automatic
350
IMMO OFF automatic
65k+
Cloud files
96
Manufacturers

Coverage across the ECUs pros actually work on

VAGBMWMercedes-BenzPSA / StellantisRenaultFordFCAHyundai · KiaToyotaJLRVolvoGMBosch EDC17MED17MD1 / MG1 VAGBMWMercedes-BenzPSA / StellantisRenaultFordFCAHyundai · KiaToyotaJLRVolvoGMBosch EDC17MED17MD1 / MG1
Workflow

From raw file to finished job
in under a minute

MasterX removes the guesswork. No searching forums, no manual patching: the software identifies the ECU and calculates the fix for you, with full automatic checksum correction on Ultimate+.

STEP 01 instant

Load your read

Drop the original ECU read. MasterX runs a deep binary scan and identifies the ECU, engine, HW/SW numbers and checksum status automatically.

STEP 02 1 click

Pick your solution

Every compatible solution lights up, Stage 1/2, DPF, EGR, AdBlue, IMMO OFF, DTC OFF and more. Select what you need.

STEP 03 seconds

Preview & apply

Check the Virtual Dyno gain, then apply. Solutions merge cleanly, and on Ultimate+ the checksum is corrected automatically.

STEP 04 1 click

Flash & done

Export the modified file, flash it back with your tool. The original is auto-backed-up locally and in the cloud for one-click restore.

Everything in one suite

Every solution a tuning
professional needs

Complete treatments, not just fault-clearing: MasterX handles the commands, monitoring, DTCs, torque requests and limp-mode strategies directly tied to the function you select. Automatic where it can be, assisted where it counts, no add-ons, no per-file tokens on the automatic modules.

DPF / FAP OFF

Particulate filter removal with matching DTC handling.

Automatic

EGR OFF

EGR valve deactivation, clean logs, no limp mode.

Automatic

AdBlue / SCR OFF

Full SCR/AdBlue system removal on supported ECUs.

Automatic

CAT / Lambda OFF

Catalyst and O2 sensor solutions, ready to flash.

Automatic

Stage 1

Optimised power & torque maps, 1,150 ECUs.

Dyno preview

Stage 2

Aggressive maps for hardware upgrades, 384 ECUs.

Dyno preview

IMMO OFF

Flash & EEPROM immobiliser removal, 350 ECUs.

Flash / EEPROM

DTC OFF

Search & switch off fault codes by code or description.

Automatic

Pops & Bangs

Crackle / overrun maps, 61 ECUs.

Sport

Flexfuel E85

Ethanol conversion maps, 104 ECUs.

Sport

MapX map editor

Full 2D/3D map editing with the MapPack library.

Pro tool

A2L · ISN · MCU ID

Software ID, ISN extraction and checksum module.

Pro tool
Sell the result before you touch the ECU

See Stage 1 & 2 gains
before applying

Pick the exact model and MasterX draws the projected power & torque curve against stock, so you can show your client the gain and quote with confidence, before a single byte is changed.

Model-accurate curves

Origin power + year selects the matching curve for a realistic projection.

Stage 1 & Stage 2

Toggle between stages and read the power/torque delta instantly.

A closing tool, not just a chart

Turn "how much will I gain?" into a signed job on the spot.

MasterX Virtual Dyno, Stage 1 & 2 projected power and torque curves versus stock

Real MasterX Virtual Dyno, Stage 1 & 2 preview before applying

MasterX ECU Analysis, deep binary scan: identity, HW/SW numbers, CPU, flash map, checksum and security
Know the file before you touch it

Deep ECU analysis,
automatic

Every read is scanned on load: identity, HW/SW numbers, CPU, flash map, checksum, read-protection and encryption status. You know exactly what you're working with, no manual lookups.

Instant identification

Brand, engine, vehicle and ECU family detected from the binary.

Safety checks

Read-protection, encryption and checksum status flagged up front.

Memory map

Segments, blank zones and fill bytes visualised before edits.

MapX · map editor

Go beyond automatic
edit your maps by hand

Not just one-click solutions. Open the full map tree, edit any table cell by cell, run math operations on a selection, and see the effect on power live, then export your work as a MapPack.

MasterX Map Edit, full map tree with an editable heat-mapped table (RPM × load)

166 maps located: cell-by-cell editing, multi-select, math operations, live search

Full map tree by category Math on selection (%, +, −, set) Precise cell-by-cell edits Export as MapPack
MasterX Map Edit, built-in Virtual Dyno tracking peak torque and power while you edit

Live power tracking

A built-in Virtual Dyno recomputes peak torque and power as you edit, so you tune with the curve in front of you, not by guesswork.

Torque & power curves

Peak Nm and HP updated live from your map changes.

Export MapPacks

Save and reuse your custom map sets across files and vehicles.

One-click save

Write the modified file back, with automatic checksum correction on Ultimate+.

You're never stuck

Live Solutions
the team is listening

A question, a bug, an idea, a tricky file? Post it in Live Solutions and get help from the MasterX team and community. See real solutions delivered by other pros, in real time.

Human support

Email & WhatsApp, with priority 24/7 on Ultimate+.

Manual Stage on request

Team-built custom Stage files (Annual+: 1 free/day, Ultimate+: unlimited).

Verified reviews

Real feedback from working technicians across Europe.

MasterX Live Solutions, community feed, reviews and support from the MasterX team
Supported ECUs

Coverage you can check
before you buy

The full supported-ECU database is public and searchable. Look up your ECU right now, brand, family, solution and Stage 2 availability.

Clear compatibility, no guesswork. A solution is marked as supported the moment MasterX officially recognizes it for the exact ECU and software version you loaded. From there, its processing is fully automated under the MasterX strategy for that file.

903
Automatic solutions
across 88 brands · DPF, EGR, AdBlue, CAT, MAF, TVA, Lambda, Flaps
1,534
Stage variants
1,150 Stage 1 + 384 Stage 2 across 34 brands
350
IMMO OFF ECUs
Flash & EEPROM across 38 brands
61
Pops & Bangs
crackle / overrun maps across 8 brands
104
Flexfuel E85
ethanol conversion across 9 brands
65k+
Cloud server files
ready-made files, updated weekly
Search the supported-ECU list Checksum coverage
The shift

Stop paying for every file.
Start owning your production tool.

Without MasterX

  • Search the ECU solution manually, forums included
  • Send the file out to an external provider
  • Wait for it to come back
  • Pay for every single file
  • Lose part of your margin to the middleman
  • Depend on someone else's availability

With MasterX

  • Load the file
  • Automatic identification
  • Solutions shown immediately
  • Processed in seconds
  • No token on automatic solutions
  • Original saved, margin stays in your workshop
The value

One job, and it has
already paid for itself.

A single IMMO OFF, DPF or Stage file billed to a client typically covers what MasterX costs for a whole year. Everything after that is margin, and you keep closing jobs your competitors have to turn away.

Find your license & estimate your payback
€1.64
per day on the Annual plan
Seconds
per file, not hours of manual work
Jobs you used to send away are now yours
IMMO, AdBlue, Stage on ECUs most tools can't touch
Trusted by professionals

What working technicians say

Independent garages, remapping specialists and ECU tuners across Europe.

★★★★★

"Support replies in just a few minutes, even on tricky cases. 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 · Lyon, FR
★★★★★

"The automatic solutions are powerful and complete, they cover everything I need day to day. And if a case gives me trouble, support is always there to back me up. Love it!"

KA
Karim A.
Remapping Expert · Brussels, BE
★★★★★

"I bought MasterX just to do a DPF OFF on a Citroën MD1CS006 nobody around me could crack. One job and the software paid for itself, with profit on top. A year later I still use it daily."

SR
Sébastien R.
Mechanic · Marseille, FR
★★★★★

"I use it for IMMO, ECU solutions, pin extraction, software identification, and support is top. It fits my daily work perfectly. Keep up the great work!"

MS
Marco S.
ECU Tuner · Milan, IT
★★★★★

"This software is second to none. IMMO OFF on a SID305 with no operation to do, the car started immediately. You're doing an amazing job. Thank you."

LH
Lukas H.
ECU Specialist · Hamburg, DE
★★★★★

"The app has evolved a lot in a short time. DPF/AdBlue OFF on modern Citroën MD1CS003 as automatic solutions, nothing unplugged, working 100%. No regrets on the purchase."

JT
James T.
Performance Workshop · Manchester, UK
FAQ

Questions pros ask before adopting MasterX

MasterX works with all major professional interfaces: K-TAG, KESS V2/V3, ByteFlasher, CMD Flash, Alientech, MPPS, PCMFlash and more. It supports OBD2, BDM, JTAG and Boot Mode depending on the ECU.

Buy online via secure Stripe checkout. Your license is activated instantly after payment and your credentials are emailed to you within minutes, no manual wait, no back-and-forth.

Yes. All plans include software updates and continuous addition of new ECU solutions. The 65,000+ file database is updated weekly. Annual+ and Ultimate+ get early access.

Support is via email and WhatsApp. Annual+ includes standard support; Ultimate+ gets priority 24/7 with faster response. The Annual (€599) plan does not include technical support.

Absolutely. The full supported-ECU list is public and searchable on the Supported ECUs page, including Stage 2 and IMMO availability per ECU.

MasterX is optimised for Windows 10 and 11 (64-bit). Install it on a laptop or desktop dedicated to tuning. Contact support for minimum requirements.

MasterX automatically backs up the original file before every modification, stored locally and in your cloud space. Restore the original anytime in one click.

MasterX is intended exclusively for licensed automotive professionals, for use on competition, track and off-road vehicles. The user is solely responsible for compliance with local regulations.

Ready to close your next job
with confidence?

Get MasterX today. Instant delivery, full automatic suite, and a supported-ECU list you can verify before you pay.

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