Economy Remapping in Leicester

It depends on the engine, the mileage and how you drive, which is why we will not quote a percentage before seeing the vehicle. Any number given blind is a guess, and the ones in adverts are usually the best case on the most suitable engine. Give us the specifics and you will get a realistic expectation for your car rather than a headline figure.

No. It moves usable torque lower down the rev range so the engine does the same work at lower revs and in a higher gear. You have as much available as before, you just need less of the rev range to get at it. Most people say it feels easier to drive rather than slower, because it needs fewer gear changes.

Usually less than you would hope, and it is worth being honest about that. City driving loses most of its fuel to repeated acceleration from a standstill, idling in traffic and running a cold engine, and software cannot change any of those. There is often a worthwhile driveability improvement from more low down torque, but the fuel figure is smaller than on a steady open road commute.

Not quite, and the reason is interesting. Your mileage is high but the individual miles are the least improvable kind, because they are slow and urban. You may well get a genuine benefit in how the car drives in traffic, with less revving needed to move. The big fuel saving that the annual mileage implies usually does not appear, and we would rather set that expectation before you book.

Turbocharged diesels doing consistent mileage on motorways and dual carriageways are the clearest case, and vans doing the same daily round are close behind. The common factor is repetition: when the journey barely changes, a small per mile difference adds up predictably. Occasional use and short urban trips in a small petrol are at the other end of the scale.

That is a function of your mileage and the fuel price, not something we can state as a fixed number. A fixed daily commute up the M1 gets there far faster than weekend driving. Tell us your weekly mileage and the kind of roads and we will talk through what that means realistically, including the cases where the payback is too slow to bother.

Yes, when it is written within the tolerances of the engine and drivetrain, which is how we work. An economy biased map is typically less demanding on the engine than a performance one, because it is aimed at doing the same work with less effort rather than at extracting more.

To a degree, because most road maps are a compromise. What we do is bias that compromise towards whichever genuinely matters to you. So decide honestly which one it is, because asking for both equally usually means getting less of each and being slightly disappointed by the result.

Yes. A remap is a modification whether it is aimed at economy or at power, and it should be declared like any other change to the vehicle. Most insurers are fine with it once told. The problem only arises if they find out at claim time rather than before.

Only indirectly, and never as the first step. A repeatedly blocking filter has a cause that needs diagnosing, and a map does not unblock anything. Once the underlying problem is dealt with, a properly written map can reduce how much soot the engine produces. Fixing the cause comes first, which in Leicester is often about the kind of journeys the vehicle does.

Yes. The original calibration is read and saved before anything is written, so the vehicle can be returned to exactly the file it came with. That matters for resale, for handing back a lease, and for any conversation with a dealer who wants it standard.

The vehicle and engine, roughly what you cover in a week, the split between city and motorway, whether you carry weight or tow, and anything you already know about the vehicle's condition. That is normally enough to tell you whether the idea is sensible for you, and it costs nothing to ring and find out.