mileage difference

[Jackpine]

Originally Posted by bikerfuzz

I did all that stuff. It wasnt one tank of gas. It was goin on for a while. about the last three months. Its not that I just filled up and went wow the mileage changed! I haven't changed any settings, and my tire pressure is correct and my habits are the same. Thats why i watched it over a period of time. Why I said average m.p.g.'s .It was noticed after using the 87 custom tune for a while. A difference in how it performed. AND THE M.P.G i n 87 mode and then the change to 87 tow.There were no real variables. The only thing I did was change the program.
Thats why I asked the question. Can it be the program?

OK, so I think you are saying you're getting better gas mileage using the tow program?

If you are driving in the city, that's probably the best program to use there. It's a program that helps you get a lot of weight moving from a standstill. And, in pure city driving, I think 13.5 is pretty damned good, considering that you are at low speed or stopped much of the time.

If you asked for a performance tune for city driving, it might very well use more gas. That sounds to me like you wanted something to burn rubber off a stop to get to the next stoplight faster than the other guy.

And, if you asked for a tune for the highway, it's not going to be right for the city.

It's very hard though, to get into your head here. I'm honestly not sure I understand what it is you're looking for.

I was VERY specific when I asked for my tune. I wanted something that would help me pass someone on a two lane road in the 60 mph range. It does that perfectly.

In city driving (New York?) your mileage is going to suck big time no matter what you do. I get about 13.X MPG in Tucson, where the lights are a mile apart and the speed limit (that no one obeys) is 45.

- Jack