Diesel Duramax Fuel Mileage > Information Source
Fuel mileage with the stock chip had been a consistent 43 mpg.
At the bottom of the screen, a calculation of the vehicle´s gas mileage at the current instant is displayed; it ranges from about 7 MPG (when I floored the accelerator from a stop) to 99 MPG (on any flat or downhill road).
The Misano Chip has been delivering 44 mpg in colder air temperatures which tend to decrease fuel mileage.
~O-O~

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