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Re: SID Brain Teaser - trip mileage
Posted by Dave (more from Dave) on Tue, 15 Oct 2002 20:42:33
In Reply to: Re: SID Brain Teaser - trip mileage, Geoff, Sun, 13 Oct 2002 14:55:05
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For my two cents worth... My understanding of the mpg calculation was that it was based upon the average of the last 20 minutes or so of driving. Your instantaneous mpg will vary dependant upon speed, engine load etc. The SID will display a mpg based upon instantaneous rate weighted, or perhaps averaged, with the pervious 20 minutes of readings. Therefore unless you are able to keep exactly the same speed, load etc your SID reading will only give you an approximation of your total mpg, though probably a pretty good one.
I may be all wrong, it wouldn't be the first time, but thats how I understand the SID mpg to work.
posted by 209.250.15...
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