[bestclimb]

Some folks have done some neat things adjusting there cars fuel maps, others not so much. It takes a specific amount of energy to accelerate a mass, overcome aerodynamic drag and power all the things that are needed/desired in a car. The rules that govern this can not be changed. What can be changed is how we chose to operate within those rules. There is a pretty narrow window of mixtures that work to produce power efficiently, your car already gets really close on it's own. With out a deep understanding on what you are doing messing around with the fuel maps you can make your mileage much worse, a bit better, or you can tell it to run slightly too lean when on the power and cook valves, burn holes in pistons or the like.

I think you are wise to look at how you are running the vehicle and getting instantaneous fuel consumption information will help with that a lot. If you have the knowledge to properly mess about with you fuel mapping go for it, if not then I would stick with monitoring rather than programing.