Custom diesel remaps written in our own Bedford workshop — checked before, logged after, and explained in plain English.
AR Performance is a working tuning and engine-build workshop on Shuttleworth Road, on the Elms Farm Industrial Estate in Bedford. Remapping is the same work we do on our own cars: we read your ECU, keep a safe copy of the original, and write the calibration around the hardware that's actually on the car.
That matters because most remap problems start with a generic file. A map that ignores a slipping clutch, a boost leak or a tired turbo will make the car worse, not better. Every car that comes in for a remap gets checked over first, so the power you pay for is power the car can use.
Not sure what your car will make? Pop your reg into our Check Your Car tool. It pulls your car's real factory power and torque and shows the typical gains for each stage, plus the parts that suit it.
Most of our remap customers are local — Bedford, Kempston, Biddenham, Goldington, Putnoe and the villages around them — but plenty travel in from further afield because they want a diesel specialist rather than a general garage. If you're coming from out of town, see our pages for Milton Keynes, Luton and Northampton.
Call, WhatsApp or use the booking form with your reg. We'll confirm a price and a day.
Boost, sensors, fault codes and clutch are checked before any software goes on.
Your original file is saved and the new map is calibrated for your hardware and how you drive.
We log it on the road, refine it, and talk you through what's changed.
“Can not thank Aaron and the team enough. I came in for a quick map, to find out the 6 puk I recently purchased from another company was on its last legs. They pulled my box off and changed the clutch within 3 hours even though they were really busy. AR went above and beyond for me.”
“Aaron and his team are incredibly knowledgeable. Every visit is professional and honest. My car always runs perfectly afterward. No hidden costs or surprises. Reliable, high-quality service every time.”
“By far the best mechanic around! Quality of service can't be beaten and quality of works is second to none! Have had a lot of works done by him for many years and would never trust anyone's work more!”
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13A Shuttleworth Road on the Elms Farm Industrial Estate, Bedford MK41 0EP — on the north-east side of town.
A straightforward Stage 1 is normally done the same day. Custom maps for bigger builds take longer because of road logging and refinement.
Yes. We save your original ECU file before we write anything, so it can be put back if you ever need it.
Yes — a remap is a modification and should be declared to your insurer. We'll give you the details of what was done.