Mon – Fri 9:30am – 5:30pm · Sat 10am – 3pm
Professional tuning files, ECU & module repair, and module cloning for garages, mobile tuners, and auto-electrical technicians across the UK. Same-day turnaround, checksum corrected, tested solutions.
POA
Prices shown are starting prices. Final cost depends on your vehicle's make, model, and condition. We always provide a free estimate before starting work.
Trade ECU File Services & Module Repairs
Professional Trade Support for Garages, Mobile Tuners & Auto-Electrical Specialists
This is a trade-only service designed exclusively for professional workshops, mobile tuners, ECU repair specialists, auto electricians and automotive businesses.
If you're a vehicle owner looking to improve the performance of your own car, please visit our ECU Remapping Services page.
At Doyen Auto Services Ltd, we provide reliable, professional ECU file services, module programming and electronic repairs to trade customers throughout the UK. Whether you require a custom tuning file, immobiliser solution, DPF or EGR calibration, or specialist electronic module repair, our experienced technicians are here to support your business.
Professional ECU File Services
Simply read your customer's ECU using your preferred programming equipment and send us the original file. Our experienced calibration engineers will analyse the software, carry out the required modifications, perform checksum correction and return a tested file ready for programming.
We support a wide range of ECU programming methods, including:
* OBD Programming * Bench Programming * Boot Mode Programming * BDM Programming * JTAG Programming * EEPROM Reading * Flash Memory Reading
Compatible tools include (but are not limited to):
* AutoTuner * FLEX * Alientech KESS3 * KTAG * CMD Flash * FoxFlash * FormulaFlash * Magic Motorsport * PCMflash * BitBox * Dimsport * Trasdata * OBDSTAR * HexProg * ACDP * And many other professional tools.
Every file is carefully checked before delivery to ensure compatibility and reliability.
Trade ECU File Solutions
We provide a comprehensive range of ECU software solutions, including:
* Stage 1 Performance Files * Stage 2 Performance Files * Economy Remaps * DPF Solutions * EGR Solutions * AdBlue (SCR) Solutions* * Lambda Sensor Solutions* * Start/Stop Deactivation * Speed Limiter Removal* * Swirl Flap Solutions * Intake Flap Solutions * Hot Start Fixes * Cold Start Adjustments * Hard Cut & Popcorn Limiters* * Launch Control* * VMAX Removal* * EVAP Solutions * Catalyst Efficiency Solutions* * Diagnostic Trouble Code (DTC) Solutions * Immobiliser (Immo) Solutions * Checksum Correction * Original File Recovery * ECU Software Restoration
Every calibration is professionally verified before being returned.
Advanced Module Repair Service
We also provide a specialist postal repair service for electronic control modules.
Simply send us your faulty unit and our technicians will:
* Perform a complete bench diagnostic inspection * Identify the root cause of the fault * Carry out component-level electronic repairs * Replace failed components where required * Repair damaged PCB tracks * Recover corrupted software * Reprogram memory where necessary * Fully bench test the repaired module * Return the unit ready for installation
Supported modules, tool list, postal repair workflow, legal notes, and trade account enquiries.
Here’s what to expect when you bring your vehicle to Doyen Auto Services
Send us the vehicle details and the original file (or the faulty module) via WhatsApp or email. We'll confirm turnaround and price before any work begins.
For files, we modify and checksum-correct your map. For postal modules, we diagnose, repair, and bench-test the unit in our workshop.
Files are returned via WhatsApp or email ready to flash. Modules are securely packaged and posted back, fully tested.
Any issues after delivery? Call us. We stand behind every file and repair we send out.
We’re a specialist automotive garage in Dumbarton, with the equipment, experience, and honest approach to get the job done right first time.
Trade-friendly pricing with account options for regular customers
We work with every major tuning tool so you don't need to change your workflow
Wide vehicle coverage including BMW FEM/BDC, Volvo CEM, and other complex modules
Postal service across the UK - secure packaging and full testing before return
Common questions about this service at Doyen Auto Services
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Transfer all data from a faulty ECU to a replacement unit - no dealer visit required. Get your vehicle back on the road quickly.
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Serious performance for serious enthusiasts. Stage 2 tuning delivers maximum gains when paired with supporting hardware modifications.
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Unlock your vehicle's hidden performance with a safe, reliable Stage 1 remap. More power, better throttle response, and improved fuel economy - all from your existing hardware.
Get in touch today to book your ecu remapping file service for garages at our Dumbarton workshop. Online booking or call us directly.
Unit 8, Levenside Business Court, Dumbarton G82 3PE · Mon–Fri 9:30am–5:30pm, Sat 10am–3pm
Modules We Repair
Our laboratory specialises in repairing a wide range of automotive electronic control units, including:
* Engine ECUs * Transmission Control Units (TCU) * Airbag (SRS) Modules * ABS / ESP Modules * Body Control Modules (BCM) * Front Electronic Modules (FEM) * Body Domain Controllers (BDC) * Central Electronic Modules (CEM) * Instrument Clusters * Immobiliser Modules * Steering Lock Modules (ESL/ELV) * Gateway Modules * Comfort Control Modules * Power Steering Modules * Hybrid & EV Control Modules (selected applications)
Advanced Laboratory Equipment
Our dedicated ECU laboratory is equipped with professional diagnostic and electronic repair equipment capable of:
* ECU Bench Simulation * CAN Bus & LIN Bus Testing * Oscilloscope Signal Analysis * EEPROM Programming * Flash Memory Programming * MCU Programming * BGA & SMD Component Replacement * PCB Track Reconstruction * Bench Power Supply Testing * Communication Verification * Data Recovery & Cloning * Quality Control Testing
Every module is thoroughly tested before being returned to ensure reliable operation.
Fast Turnaround
We understand the pressure workshops face when customers are waiting for their vehicles.
That's why we aim to provide:
* Same-day turnaround for most ECU file services. * 24–48 hour turnaround for most postal module repairs (subject to fault complexity and parts availability). * Technical support before and after programming where required.
Our goal is to minimise vehicle downtime and help your business deliver a professional service to your customers.
Why Trade Customers Choose Doyen Auto Services Ltd
* Professional technical support * Fast turnaround times * Reliable ECU file services * Component-level module repairs * Original file backup and recovery * Advanced diagnostic laboratory * Quality-tested repairs * Competitive trade pricing * UK-wide postal service * Experienced automotive electronics specialists
Whether you need a custom tuning file, software solution, immobiliser repair or advanced ECU and module repair, Doyen Auto Services Ltd is your trusted trade partner for professional automotive electronics.
Trade Use & Legal Notice
Some software modifications listed above may affect a vehicle's emissions control systems or compliance with road-use regulations. These services are supplied for export, off-road, motorsport, research, testing or other lawful specialist applications and it is the responsibility of the customer to ensure that any modification is used in accordance with all applicable laws and regulations in their jurisdiction.
