That's interesting, I have always wondered how it is actually done. How is fuel consumption monitored? Is it just a theoretical, calculated number in the influence coefficient, or is it a measured value?
I suppose it wouldn't be practical, or easily achievable, but it would be cool to see an ecomodded vehicle put through the same test. You could have a real, variable controlled test of MPG to get an exact gain over the factory vehicle. Although aero mods wouldn't show a gain on the dyno, unless you could factor in the decrease in Cd into the influence coefficient.
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