Eco tyres, fuel optimisers, fuel savers, ECU remaps and custom chips are all devices which claim to improve your fuel consumption.
However, do they actually reduce the volume of fuel you use?
Obvious things like correct tyre pressures and off-loading unnecessary weight help, but the main contributory factor is still you!
Yes that’s right; the way you drive has the greatest effect on fuel consumption. Light acceleration, getting into a higher gear when cruising and using the gears when slowing down could greatly improve your fuel consumption.
If these devices held the only key to fuel savings manufacturers would have installed them in the first place.