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 are a vehicle owner looking to improve the performance of your own vehicle, please visit our ECU Remapping Services page.
At Doyen Auto Services Ltd, we provide professional ECU file services, module programming and electronic repairs to trade customers throughout the UK. Whether you require a custom tuning file, immobiliser solution, ECU software service 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 calibration team can analyse the software, carry out the requested modifications, perform checksum correction where required and return the 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 programming platforms
Every file is checked before delivery to help ensure compatibility with the supplied original file and intended application.
Trade ECU File Solutions
We provide a comprehensive range of ECU software services, including:
• Stage 1 Performance Files • Stage 2 Performance Files • Economy Remaps • DPF Software Solutions • EGR Software Solutions • AdBlue/SCR Software Solutions where legally permitted • Lambda Sensor Solutions where legally permitted • Start/Stop Deactivation • Speed Limiter Removal where legally permitted • Swirl Flap Solutions • Intake Flap Solutions • Hot Start Fixes • Cold Start Adjustments • Hard Cut & Popcorn Limiters for suitable specialist applications • Launch Control for suitable applications • VMAX Removal where legally permitted • EVAP Solutions • Catalyst Efficiency Solutions where legally permitted • DTC Solutions • Immobiliser/Immo Solutions • Checksum Correction • Original File Recovery • ECU Software Restoration
All software services are subject to the vehicle, ECU type, original file condition and intended application.
Advanced Module Repair Service
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
Starting from
£150
Don't replace what can be repaired. We diagnose and fix faulty engine control units at a fraction of the cost of a new unit.
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£150
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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£350
Serious performance for serious enthusiasts. Stage 2 tuning delivers maximum gains when paired with supporting hardware modifications.
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£150
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
We also provide a specialist postal repair service for electronic control modules.
Simply send us the faulty unit and our technicians can:
• Perform a comprehensive bench diagnostic inspection • Identify the likely cause of the fault • Carry out component-level electronic repairs where possible • Replace failed electronic components • Repair damaged PCB tracks • Investigate corrupted software and memory faults • Reprogram memory where supported • Carry out data recovery where possible • Fully bench test the repaired module • Return the unit ready for installation where appropriate
Modules We Repair
Our electronics laboratory specialises in a wide range of automotive electronic control modules, 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 • Electric Power Steering Modules • Hybrid & EV Control Modules on 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 where supported • BGA & SMD Component Replacement • PCB Track Reconstruction • Bench Power Supply Testing • Communication Verification • Data Recovery & Cloning • Post-repair Quality Control Testing
Every module is thoroughly tested before being returned to the customer.
Fast Trade Turnaround
We understand that vehicle downtime can affect your workshop and your customer.
Our typical turnaround targets are:
• Same-day turnaround for many ECU file services • 24–48 hour turnaround for many postal module repairs • Technical support before and after programming where required
Turnaround times can vary depending on the ECU or module, fault complexity, parts availability and the work required.
Why Trade Customers Choose Doyen Auto Services Ltd
• Professional technical support • Fast turnaround • Reliable ECU file services • Component-level electronic 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, ECU software service, immobiliser solution, data recovery or advanced ECU and module repair, Doyen Auto Services Ltd provides professional automotive electronics support for the trade.
Trade Use & Legal Notice
Some software modifications can affect vehicle emissions systems, safety functions, type approval or road-use compliance.
Services that may affect emissions-control systems or other regulated vehicle functions are supplied only for lawful applications, such as export, off-road, motorsport, research, testing or other applications where permitted.
It is the responsibility of the customer and end user to ensure that any software modification or repair is used in accordance with all applicable laws and regulations in the relevant jurisdiction.
Doyen Auto Services Ltd
Unit 8, Levenside Business Court Dumbarton G82 3PE
Telephone: 0141 467 2904 Mobile: 07760 926245
