ECU File Service
Checked, write-ready ECU remap files for garages, tuners and workshops.
Remote tuning files built from your ECU read
BSG Automotive supplies ECU tuning files for trade users and prepared customers who already have a valid ECU read from compatible tuning tools. Send us the original file or reliable ECU identification, tell us what the vehicle needs, and we will review the software numbers before building a file that is ready to write back to the vehicle.
This service is useful for garages and mobile technicians who can read and write ECUs but want support with calibration, delete requests, DTC solutions or vehicle-specific tuning strategy. We also support local London customers who have already had their ECU read and need a checked file rather than a full mobile remap appointment.
File options
- Stage 1 and Stage 2 performance tuning where the hardware and vehicle condition support it.
- DPF, EGR, AdBlue, swirl flap, rear lambda and related delete requests.
- DTC solutions, limp-mode strategy review and software corrections for supported ECUs.
- IMMO off, ECU cloning support and gearbox/TCU tuning where the platform is supported.
How the file-service workflow works
- Send the ECU read or ID: include the original read where possible, make, model, engine, year, ECU type, software number and tool used.
- We review compatibility: the ECU family, software version and requested options are checked before any file is built.
- We modify and check the file: calibration changes are made from the original file, with checksums and obvious file integrity issues reviewed.
- You receive the write-ready file: the modified file is returned with notes for writing, and the original file is kept as a recovery baseline.
- Support and revisions: where appropriate, we help with sensible revisions based on logs, fault codes or write-tool feedback.
Quality control matters
A tuning file should match the exact ECU software, not just the engine code. We work from the vehicle's original read wherever possible so immobiliser data, coding areas and software structure remain aligned with the car. If a file request is risky, incomplete or not suitable for the ECU, we will say so before you write anything to the vehicle.
ECU File Service
From £40- ✓Stage 1, Stage 2, economy and custom requests
- ✓Original-file backup and write-ready return file
- ✓Checksums and compatibility reviewed where applicable
- ✓Remote support for garages, tuners and workshops
Frequently Asked Questions
Garages, tuners, workshops and customers who already have a valid ECU read from compatible tuning tools, or who can provide reliable ECU identification data.
Send the original ECU read where possible, vehicle details, ECU and software numbers, the tool used to read it, and the exact options requested.
Files are checked before return and checksums are handled where required by the ECU and tool workflow. Some tools correct checksums during writing, and we will advise when this applies.
We can review delete requests case by case where they are legally appropriate, such as off-road, track, motorsport or export use. We do not present emissions removal as road or MOT compliant.
Yes. The original read is retained as the baseline for the modified file, so the vehicle can be returned to standard software if needed.