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Old 05-24-2012, 08:20 PM   #1 (permalink)
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Scangauge tank mpg question

When I last filled my car I did the fillip routine on my scangauge II. After I drove for about 15 minutes my current mpg was 37.5 but the tank avg mph was 35. Why wouldn't they be the same?

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Old 05-24-2012, 08:29 PM   #2 (permalink)
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if i'm only off for a few minutes, the current trip doesnt reset regardless of reseting the tank, off long enough it will. i'm not sure how long you have to be off for for the current trip to reset, but in my experience its independent of the tank reset
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Old 05-24-2012, 08:48 PM   #3 (permalink)
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Quote:
Originally Posted by dmerle View Post
When I last filled my car I did the fillip routine on my scangauge II. After I drove for about 15 minutes my current mpg was 37.5 but the tank avg mph was 35. Why wouldn't they be the same?
...sounds like the algorithm that's "estimating" MPG is simply momentarily 'over/under shooting' as it does it's number crunching, usually the result of mixing integer and decimal numbers.

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