Rich when you tune a truck your throttle position is different injector timing is different and that I think is why the lie o meter is so far off on a tuned truck. I would like to get 3 or 4 more miles per gallon, but I'm afraid that is not going to happen. I got 99.9 MPG one time, then I got to the bottom of the mountain and had to go back up. In the real world pulling 20'000 + pounds getting 10 or 11 REAL miles pre gallon ain't to bad.
Lynwood
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