It looks to me like you're extrapolating fuel consumption and distance from average mpg for guessed time at different % engine load, a very crude guesstimation of actual consumption, time, and distance.
The Scangauge II with performance upgrade allows us to log actual fuel consumption and distance every 0.4 seconds. No guesswork, no estimates. All you have to do is maintain the % engine load from speed A to speed B. See this thread.
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Darrell
Boycotting Exxon since 1989, BP since 2010
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? George Carlin
Mean Green Toaster Machine
49.5 mpg avg over 53,000 miles. 176% of '08 EPA
Best flat drive 94.5 mpg for 10.1 mi
Longest tank 1033 km (642 mi) on 10.56 gal = 60.8 mpg
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