Engine remapping, developed and measured on our dyno

Allow half a day for a Stage 1, both dyno runs included. Some recent ECUs need to be unlocked first: in the great majority of cases we do that in our workshop, with no extra delay. A few specific references require the ECU to be sent away, which then means about three days off the road. We check your version and confirm it before any work.

We do not publish a price list, because the figure depends on the engine's original power, on the type of ECU and on your goal: a Stage 1 on a 110 hp diesel and a map developed for an engine that already has performance parts are not the same amount of work. Both dyno runs are part of the Stage 1 service. Tell us your vehicle and what you expect from it: the quote is free and without obligation. Request a quote

We start by reading the software present in the ECU. On the great majority of vehicles that reading goes through the diagnostic socket; on some references the access is on the ECU itself, sometimes after unlocking. The file we read is saved, then we modify the tables that matter: injection, boost pressure, ignition advance, torque management. The modified file is written back into the ECU, and the result is measured on the dyno before you take the road again. This is not something to attempt at home: an interrupted write can leave an ECU unusable.

Two of them, of different kinds: a tool that reads and writes ECUs, which talks to the vehicle, and a map editor, used to find the tables inside the file and change them. We work with professional tools, but the tool is not what makes the result: what counts is knowing which table to change, by how much, and checking it on the dyno. That is why a generic file downloaded elsewhere is not worth a map developed for your own engine.

A properly equipped workshop can compare the software present with the original version. We hide nothing: your original map is saved and can be restored at any time, for instance before a dealer visit or a resale.

Once the factory file has been written back, the software in the ECU is identical to the original version again, and a file comparison shows nothing. Some ECUs do keep a record of the number of writes, which a dealer tool can read: we are therefore not selling invisibility. On the contrary, we hand over an invoice and a dyno report in your name, and we advise you to mention the modification to your insurer.

A tuning box sits between the sensors and the ECU and feeds it falsified values: the engine works blind, outside its own tables. Remapping changes the tables themselves, inside the ECU, with its protections still active. That is why we do not fit boxes. Tuning box or remapping

Yes, always. Your original file is archived with us. Restoring it is a simple operation and it is part of the service.

Yes, in one case: a software update at the dealer rewrites the ECU and erases the map we developed. That happens during a recall or a repair under warranty. The vehicle is in no danger, it simply goes back to its factory program. We keep both files, your original one and ours: tell us after the dealer visit and the map can be written again.

Not if the mechanical limits are respected. We keep the ECU protections and the admissible pressure, temperature and torque thresholds, and we measure the result on the dyno: a smooth curve is the sign of a setting that will hold. A poorly maintained engine, on the other hand, has to be put right first, and the preliminary diagnosis is there to say so.

Yes, if the mechanicals are healthy. Mileage counts for less than the real condition of the engine, and that is what the preliminary diagnosis is for: no faults in memory, condition of the turbo, the injectors and the clutch. An engine that burns oil, a tired turbo or overdue servicing are dealt with first. On a vehicle of that age we aim for torque low down rather than peak power: it is what you feel most at the wheel and what asks the least of the mechanicals.

No, a remap does not trigger a new test. The vehicle must of course remain compliant: we never touch emissions systems, and the emissions check goes as before. If power is stated on your registration document, discuss it with your insurer.

Stage 1 works on the software only, on a strictly standard vehicle. Stage 2 assumes parts have already been changed, an exhaust or an intake for instance, and the map is then developed for that precise hardware. Stage 1 or Stage 2

Yes for hybrids. As for the locked ECUs that appeared after 2020 on many makes, petrol and diesel alike, they need to be unlocked first, which in the great majority of cases we do on site. BMW and Mini locked ECUs

Yes, as long as the vehicle remains compliant. We never touch emissions systems and we keep the manufacturer's safeties in place. Do tell your insurer about the modification: that is the rule, and it avoids any argument after an incident.