"I think the mileage is computed from the injection volume, not the tank level."
And the injection volume is computed by the 'puter monitoring engine speed and the duty cycle of the injectors.
So the fuel actually used isn't really MEASURED.
The number the 'puter comes up with will only be perfectly correct if all the injectors are absolutely at exact flow "spec", and the gas temp/specific gravity is exactly what the system was calibrated at.
So, the mileage the 'puter shows you is actually an "educated guess".
A while back, some rumors were going around that certain aftermarket "chips" achieved better mileage on the "digital dash" by mucking with the software the 'puter uses to calculate MPG.
Whether true or not, I'm sure that would be possible.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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