ECU Remapping in Kettering

Four things. Whether the factory file is read and saved before any change is made. Whether the engine is logged on the road afterwards as well as before. What they do about emissions equipment, because that answer tells you a great deal about the rest. And whether they have ever turned a job down. Anyone who says yes to everything is taking bookings rather than assessing vehicles.

Ask what was recorded. A calibration produced for your vehicle comes from readings taken on your engine, so there is something to point at: what it was doing before, what changed, what it was doing afterwards. A file that arrived by download has none of that behind it and cannot account for the condition of the particular engine it lands on.

Regularly. Anything asking for emissions equipment to be removed or defeated. Engines with a fault that should be repaired rather than mapped over. Control units that cannot sensibly be accessed. Gearboxes where nothing useful is available. And vehicles where the honest assessment is that there is too little to gain to justify the cost. You will hear that on the phone rather than after a visit.

Sometimes considerably less, and it is fair to ask. When a manufacturer sells the same engine in several states of tune, the top one is normally closer to what the hardware was designed around, so there is less unused margin sitting in the software. Give us the exact model and the year, and you will get a realistic view rather than an encouraging one.

Yes, and that is true whether the vehicle has been mapped or not. Cold engines, wet roads, four passengers and a boot full of luggage all change what you feel through the pedal. It is one of the reasons nobody should be quoting you a precise figure for the difference, because the conditions on the day move the result about quite happily on their own.

Use what the manufacturer specifies as the minimum and you will be fine. Higher grade fuels can suit some engines, particularly turbocharged petrols worked hard, but that is worth discussing for your specific vehicle rather than treating as a rule. What does matter is consistency, because switching around makes it far harder to tell whether anything has genuinely changed.

It matters enough to check before anything is written. The calibration currently loaded can be read, which shows whether somebody has already been in there, and a look at the live data gives a reasonable idea of how healthy the engine is. Starting from a known position is far better than assuming the vehicle left the factory the way it is now.

Not at all, and it is usually more helpful than technical language. Describe the moment that annoys you. Pulling out of a junction, a hill where it runs out of puff, a gap you decided against taking. Those descriptions point at a specific part of the map far more reliably than a request for a named stage or a figure you read somewhere.

We work on vehicles with the say so of the person who owns them, so if you are arranging it for somebody else, or the vehicle belongs to a business you run, just say so when you book. It avoids an awkward conversation on the day. If it is leased or on finance, mention that too, because it changes the advice rather than just the paperwork.

That depends on why you want it. If the aim is a fuel saving, a year of your mileage either makes the arithmetic work or it does not, and we can go through that honestly with you. If the aim is simply to enjoy the car more for the time you have it left, that is a perfectly good reason, and the standard file goes back on before it is sold.