Chip Your Engine
Chipping or remapping an engine is normally done to increase power, however it is now being used to also improve fuel economy. Some chipping companies even claim improvements of up to 16%. Having your engine remapped will improve the power so you will have to be careful not to end up using more fuel, restrain that right foot!
Problems
It isn't cheap to do, it will cost at least a couple of hundred of pounds. A quote on a Ford Fiesta 1.4l came back as £299 which does include VAT and fitting. Over the long-term you should get your money back though in lower fuel bills and also a more powerful/economical car should be easier for you to sell over other sellers of the same car.
Related Resources
Superchips
