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Originally Posted by brick
...keep in mind that it's not a perfect science, and the ScanGauge may be a little over or under depending on how much gas the pump feels like giving you on a particular day.
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Precisely - that is to be expected.
I do have 'Diesela' and .8 litre engine size selected.
After that, it seems to me there are primarily two calibrations that effect the FE number - the speed - and the fillup 'adjustment factor'.
Being that I have calibrated the speed with a GPS, I'm leaning towards ignoring the fillup 'adjustment factor', unless after 5000 miles, there is a percentage point or two difference between the cumulative S II FE, and the FE number obtained through the total volume of fuel purchased, and total (GPS calibrated) distance travelled.
Perhaps that is where I will start - simply start keeping track of the Scanguage 'tank' data along side my existing data, and then compare it every 1000 miles to ensure it is within 1% overall. Obviously some folks really trust the numbers from the Scanguage - and I'm merely trying to get to that level objectively.
There is one advantage I have - in that I can fill right to the top of the filler tube in my smart - visually seeing the level of the fuel... and I can ensure there is no foam... this has allowed me to calculate very accurate tank by tank FE numbers, even on partial fills, simply based on GPS distance and fuel volume filled... BUT - it would be so much better to have a second source for a FE number, hence Scanguage.
smartzuuk 
Hybrid Mode
