I actually question what the "overall" MPG is calculating.
I use my #1 trip meter for each tank, so the MPG linked to it should be the MPG of that tank.
I use my #2 trip meter for long trip measurements, so the MPG linked to it should be the average MPG of the entire trip; say a 4000 mile trip, it should give me the average MPG of that trip.
However, #2 (my overall) seems to fluctuate a lot from my #1, and I often get readings that I don't believe are consistent. For example, if I ride for 5 tanks and each one runs about 45 mpg on trip meter #1, logically, I should be seeing about 45 mpg as an average for #2; yet I often see 35 mpg on #2 when I know that I have never been at that MPG on average for trip #1. Does that make sense?
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Last edited by MeefZah; 12-25-2014 at 03:47 PM.