ECU Remapping in Harrington

A bit under fifteen miles, roughly due east of Lutterworth. Close enough that we are out this way often, far enough that we build the trip into a day rather than squeeze it in at short notice. Give us some idea of when you are around and we will set a date aside. Most people find that easier than waiting on a same day slot that was never realistic.

Harrington itself, plus Arthingworth, Draughton, Haselbech, Kelmarsh, Maidwell, Naseby and Thorpe Underwood. Desborough, Rothwell, Broughton and Market Harborough are all close by and have pages of their own. Whichever of those names applies to where you are, ring the same number. It genuinely does not change what we do or how long it takes once we are there.

Usually yes, and more so than for a car that sits in traffic. Country miles keep an engine warm and working in the low and middle of the rev range, which is precisely the area a custom map can improve. If you tow, carry weight or drive a long way to work, the difference is easier to feel. We will say so if your particular vehicle and usage do not justify it.

It can, but only if you let it. The map reduces the effort the engine needs for a given bit of road. If you use that as easier progress at the same speeds, the figure moves. If you use it to get past tractors faster, it will not. We would rather set that expectation now than have you measure a tank and feel misled.

We come to you. That is the main way this works, and for a village fifteen miles from the workshop it saves you a pointless round trip. If you would rather visit us on Rugby Road in Lutterworth, that is fine too and some people combine it with something else they are doing. The job is the same either way.

Somewhere the vehicle can stand with a door open and the engine able to start and run, and a battery in decent condition. Writing to an ECU needs steady voltage from beginning to end, and a tired battery can fall over partway through even though it fires the engine up without complaint. If the vehicle has been sitting unused for a while, say so when you ring.

Diagnostics, before anything else is discussed. We look at live data to work out why the filter is loading rather than simply confirming that it is. That means pressure across it, the soot and ash values, exhaust temperatures, and how many regenerations the vehicle attempted compared with how many it completed. The cause is often something else entirely, and treating the symptom would just bring you back in a month.

No, and it is worth being blunt about why. Taking a particulate filter off is an MOT failure and makes the vehicle unlawful to use on the road, and we will not write software claiming a part is present when it has gone. We clean filters, run forced regenerations and fix the underlying fault. Where a filter is genuinely finished, we will tell you it needs replacing rather than sell you a clean that fails.

Yes, and without any drama. The factory file is pulled from the ECU and kept before a single byte is written, so returning the vehicle to its original calibration is straightforward at any point. People ask for it before selling, at the end of a lease, or ahead of a main dealer appointment. You do not need to explain your reasons to us, just ring and arrange a time.

They do, and you should tell them. A map is a modification in the same way an exhaust or a suspension change is, and it belongs on the policy. Most insurers record it without any fuss and plenty do not alter the premium at all. The problem only ever arises when an undeclared change surfaces during a claim, and that is a bad moment to discover it.