Well I have just got done figuring out how well my mileage is running a smaller tune and then a larger tune. Where I am working now, out on a pipeline, I am driving a minumum of 110 miles a day, some times upwards of 225 miles a day. When I started working out there, I figured I would turn the Predator down from the 85 or 120hp tune to the 40hp tow tune. With 90% of my mileage being highway (55-65mph) and little to no idleing when not driving, I was able to get 16.9-17.7mpg(the lower average was a tank that I was idleing the most, couple hot days, had the a/c on for most of the day). I ran about 11 tanks of fuel on that setting. I then wanted to see how my mileage would change, good or bad, if I bumped it up to the 85hp setting. Well all I can say is that I was very surprised, and very pleased. After the first 3-4 tanks, I have gone over 20mpg. My best is 21.6mpg. I have been getting better at being good with the throttle, not mashing on it, or at least not as much as I was before. I will keep on hand caculate my mileage and want to get a good average after another 10 tanks or so. Which might only be about a month. I'm filling up every 2-4 days. Good thing I'm getting paid for mileage and perday.
