Can someone educate me on the fuel economy monitoring capabilities of the Quadzilla? I think that the gallon/trip is pretty self explanatory, but I don’t understand what the eco gauge is telling me. My truck did not have a mpg display originally, so I have always hand calculated just for curiosity. I have never recorded or tracked mileage other than a quick check at the filling station. I am curious about these features, as I am going to start playing with tunes and see how effecient I can make