ECU Testing, Repair & Cloning
Find your module, choose the service you need, and pay online. Based in Dumbarton, we take mail-in ECU work from across Glasgow, Scotland and the whole UK — post your unit in, we test, repair or clone it, and send it straight back.
1. Find your ECU
Search by ECU type or part number and see the services we offer with prices.
2. Pay online
Add the service to your basket and pay securely by card. The listed price is the starting price.
3. Post it in
Send your module to our workshop with your reference. We confirm as soon as it arrives.
4. We fix & return
We assess, confirm the final price, carry out the work, and ship your unit back to you.
Enter the ECU type, part number, or manufacturer printed on your unit.
Your basket
0Search for your ECU or browse by manufacturer, then add the service you need.
Mail-in ECU repair & cloning — across Scotland and the whole UK
You don’t need to be local to use us. From our Dumbarton workshop we handle ECU testing, repair, cloning, IMMO off, DPF/EGR off and tuning for customers who post their units in from all over the country - Glasgow, Edinburgh, Aberdeen, Dundee and the rest of Scotland, as well as England and Wales.
A lot of the work we do is sent to specialists further afield simply because people don’t know it can be done closer to home. If your garage has told you a module is “not repairable” or needs an expensive dealer replacement, it’s often worth sending it to us first - repair and cloning are usually a fraction of the cost of a new, coded unit.
ECU service — frequently asked questions
How does the mail-in ECU service work?
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Where do you accept ECUs from?
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How long does an ECU repair or clone take?
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Is it safe to post my ECU?
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Do you cover my ECU type?
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Where to send your unit
After payment you’ll get a reference by email. Package your module securely, include your name and reference, and post to:
Doyen Auto Services Ltd, Unit 8, Levenside Business Court, Dumbarton G82 3PE