​Can I save fuel from ecu tuning? 

Yes! When we remap a vehicle, especially when fuel saving is the priority, we focus on improving the low end torque and widening the power-band as far as we can.  This increase in low end torque will mean less throttle pedal input is required to maintain cruising speeds, when fully laden or when on a gradient. It will also mean that the vehicle will be more comfortable in higher gears at slower speeds as well requiring fewer gear changes overall. If you combine these factors with adjusting your driving style to make the most of the extra low end torque you will see an improvement in fuel consumption. This is most effective on turbo-diesel engines, where the savings could be as much as 20%. 

What do you actually modify in my vehicle? 

We do not change any hardware in your vehicle, we just modify the operating parameters in the ECU’s program or ‘map’. In many cases the map stored on the ECU’s processor can be accessed via the on-board diagnostics port (OBD) in the vehicle, normally found under the dashboard. In some newer models the ECU will have to be removed from the vehicle and the casing opened, our technicians will then use specialist tools to read the original map straight from the processing chip. 
The technician will then upload the original map to our map writing team who will adjust the parameters to maximise the performance, fuel economy or a clever blend of both. Depending on the vehicle and ECU type, the remapping process can take under an hour.  If at any time you wish to return your vehicles ECU to its original default settings, this can be done easily as we always keep a copy of the original software as a backup. 

Is ECU remapping legal? 

Yes, it is legal to remap an ECU on an engine. Although you should inform your insurance company of any alterations made to your vehicle.