Torque Converter?

[BlackSTX]

Yeah, Jack said it! Don't be obsessed with the readout, check mileage off of the odometer at fill-ups. Keep in mind that you'll have some variation in filling up the tank, it never stops at exactly the same volume every time.

I can average about 13 mpg all week, and then take a short 30 mile run (with a lot of hard acceleration and cruising above 65 mph) and see mileage readout jump to over 17 mpg. Then if I check off of the odometer at fill up, I can see mileage drop to as little as 11 mpg.
From that I'd conclude that readout is a good indicator of driving style or type (city/highway).

[ticopowell]

From what I have seen so far I get about 13 mpg's no matter what kind of driving I do, I do assume I idle a little more than most people, so I know that can have an effect, but the average mpg's according to the gryphon fluctuate so much that i just use it as a guesstimate of how im doing, and usually it is 2-3 mpg's higher than what I am getting. Again its been only 2 months since I have had the truck so ill see what happens over summer before I do anything about it.

[88Racing]

Originally Posted by ticopowell

From what I have seen so far I get about 13 mpg's no matter what kind of driving I do, I do assume I idle a little more than most people, so I know that can have an effect, but the average mpg's according to the gryphon fluctuate so much that i just use it as a guesstimate of how im doing, and usually it is 2-3 mpg's higher than what I am getting. Again its been only 2 months since I have had the truck so ill see what happens over summer before I do anything about it.

The canned tow tune runs a little richer.
Bill has tweeked it this way for some good reasons.
So that may or might be part of your loss in mpg's.

[ticopowell]

Yeah that would make sense, I am gonna get the custom tunes done over summer i hope... but for $60 each its kinda out of my budget for now, plus I havent done almost anything performance wise except the gryphon, a gott's mod, and just put on a cat back gibson exhaust. then I needed new tires so I got some 35's on there now. It looks great, but i gotta save some $$
I think I will change it over to the performance tune to see if that helps, but with the big tires the extra low end torque might come in handy