ECU Remapping in Nuneaton

Not necessarily, and it is the wrong place to start. A flat car might be mechanically tired, it might be in a protective mode because of a fault, or it might be healthy and simply calibrated cautiously. Only the last of those is a software job. Tell us what changed, when it changed and whether anything is showing on the dash, and that usually narrows it down a long way.

By looking rather than assuming. Fault codes are part of it, but live data tells you more: boost actually achieved against boost requested, fuel trims, exhaust temperatures, and how the engine behaves under load on the road rather than sitting on a driveway. A healthy engine follows what it is asked for closely. A tired one falls short in ways that show up clearly once you log it.

It records what the engine is doing while it is genuinely working, which is the only condition that matters. Requested against actual boost, fuelling, timing, intake and exhaust temperatures, and whether anything is being pulled back for protection. We log before writing anything so we know the starting point, and again afterwards so we can see the change did what it was intended to rather than hoping it did.

A properly written calibration does not affect the MOT. The emissions equipment is all still fitted and still working, because we do not remove any of it. Where cars fail is when somebody has taken a filter off or written software pretending a missing component is present, which is an automatic failure and unlawful to use on the road. That is not work we take on.

It depends heavily on the vehicle, because the engine control unit is one part of a larger system that also manages the electric side, and manufacturers vary enormously in how open that is. There is no useful blanket answer. Tell us the exact make, model, year and engine when you ring and we will find out what is actually possible before anybody commits to anything.

On a turbocharged engine, generally yes, because the factory calibration has to tolerate poor fuel, extreme climates and neglected servicing anywhere the model is sold. A naturally aspirated petrol has far less headroom in software, and on some of them the honest answer is that the gain would not justify the money. Tell us the engine and we will say which of those two yours is.

More than people expect. A calibration creates an opportunity. What you do with it decides what you get. Driven the same way as before, many cars use the same fuel or slightly less because the engine is doing the same work with less effort. Driven the way the extra response invites, it will use more. Most people land somewhere between the two.

Potentially, which is why the state of the vehicle matters before the work rather than after it. A clutch that is already marginal, a cooling system that is struggling or a gearbox nearing the end of its life will reach that point sooner. On a healthy vehicle kept within what the drivetrain was built for, it is not a concern, and that is the judgement we make before agreeing to anything.

Car remaps start from £129. Vans and commercial vehicles are quoted per vehicle, because the work genuinely differs between a small van and a large one. You will be told the figure for your vehicle before committing to anything. If we think the money would be better spent elsewhere on your car, you will be told that instead, which happens more often than you might expect.

With the phone, and with a description rather than a service name. Say what the vehicle is, what it does in a normal week, what is annoying you about it and whether anything is lit up on the dash. That is enough for us to tell you whether you are looking at diagnostics, an engine map, transmission software or nothing at all, before any money changes hands.