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OBCs and mpg etc.



I could be wrong but I was under the impression that the fuel usage was
calculated from the flow thru the injection system - opening duration of the
injectors - rather than from the tank sensor. The distance is normally from
the digital speedometer - most of these don't use a cable - just a sensor in
the diff. This is also how the 'econometer' works. This lot is all integrated
in the OBC to give the various functions. DaveE.