The ECU re-map is not designed to improve economy, it is designed to improve off boots flexibility to 'help' with the over geared 6th etc and reduce noise. If some have experience an improvement in mpg, good for you, but that was not it's purpose.
First, HELLO. my first post here.
i've been a fan of the site for a while and signed myself recently mainly to respond to this one quote and pose a question.
Being quite a technically gifted person and having a fair grasp of the working of cars, engine and gearboxes etc how can an ECU download cure the mechanical fault of a vehicle being overgeared?
Cheers!