[backpacker3]

So I was just looking at some stuff for my car and saw some flash tuning devices. Not the little magic boxes on ebay but these are computers that hold tunes that are specifically designed for the vehicle and they really do work besides holding several tunes ( usually a stock tune, a valet mode tune, and some performance tunes.) they also can log data and monitor different parameters and capture 0-60 times.

Now you're probably thinking what does this have to do with getting better fuel economy? Well you've probably seen how a lot of newer cars have buttons that say sport or eco and comfort or something like that and pressing one makes the car more sporty to drive or gives better FE or makes it like a basic stock tune that is the same thing as a flash tuner pretty much. Pressing the button tells the car to use that tune for whatever button was pushed. So I was thinking why couldn't there be a way for a flash tuner to have EcoTunes that give better FE?

Has anyone ever tried tuning a car for better FE I figure someone with the right programming knowledge could take a existing flash tuner and find a way to store different tuning software on it and you could even have it display fuel consumption instead of acceleration times.

Now if that wasn't possible I wonder if an arduino powered device could do something similar but someone with experience would have to chime in there.

The problems.
first of all you would have to find someone to make a tune for every model of vehicle the device would be used on. And those tunes would have to be tested

Possible solution. If someone had there own vehicle tuned they could share it with others afterward

Second modifications to the vehicle might cause problems with the tune and different hypermiling techniques might cause problems as well

Possible solution. Keep modification in mind when tuning the vehicle/ test with modifications/driving techniques.

So what do all of you think worthwhile to consider or not worth the time?