ECU Remapping in Earls Barton

Because the calibration is deliberately cautious low down. Manufacturers write one file for every market, every fuel quality and every owner, so boost arrives later and fuelling stays conservative until the engine is obviously happy. Nothing is faulty and nothing shows on a scan. A map written for your specific vehicle uses the margin that caution leaves behind, which is what most people here are actually asking for.

That is where you will feel it most. The six miles or so between here and town is made of junctions, gradients and overtakes, all of which happen in the middle of the rev range. The change lands exactly there. What you will not notice is anything at the very top of the rev band, because on that journey you almost never go there.

Yes, and there is usually more to it. Part of the delay you feel is the transmission control unit rather than the engine: when it shifts, how quickly, how long it holds a gear. That software can often be adjusted too. Tell us the exact vehicle and year and we will check what is possible on your box before quoting anything, because it varies enormously.

On an automatic that is normally the sensible order. Writing both together means the two are designed to work with each other from the start instead of one being retrofitted to the other, and it saves a second trip out here, which at this distance is worth something to both of us. If the engine map is already done, the gearbox can still be corrected afterwards.

We come to you. It is roughly twenty three miles south east of the workshop, so it is a planned visit rather than something we squeeze in, but it is a normal part of what we do. Driveway, street or work car park is fine as long as the vehicle can sit with the engine able to run. The workshop is in Lutterworth if you prefer.

Mears Ashby, Ecton, Ecton Brook, Wilby, Great Billing, Bellinge, Rectory Farm, Hatton Park, Brafield on the Green, Cogenhoe and New Barton. Northampton, Moulton, Burton Latimer and Broughton are all covered separately. If you are on the edge of one of those and unsure which page is yours, it changes nothing at our end, so just ring and ask.

Yes. The original calibration is read and stored before anything at all is written, so the vehicle can be put back exactly as it was in a matter of minutes. That applies to a transmission file as well as an engine one. It is the reason a dealer visit, a sale or a lease return never needs to be complicated by work we have done.

When it is written for the individual vehicle and kept inside what the drivetrain was built for, yes. The risk comes from generic files loaded because an engine code matched, with nobody driving the car afterwards to see the result. We log before and after so the answer is measured rather than hoped for. A vehicle that is already unwell is a different conversation entirely.

Yes. It is a modification and it should be declared, whether it is the engine software, the gearbox software or both. Insurers are generally relaxed about it once told. The problem is never the declaration, it is the absence of one turning up in the middle of a claim, when you have considerably less room to explain yourself.

The keys, somewhere the vehicle can sit and be driven out from, and a battery in reasonable health. That last one matters more than people think, because writing to an ECU needs steady voltage throughout and a battery that starts the car fine can still fail part way through a write. If the vehicle has been standing for a while, mention it when you book.