Scanguage II Calibration: 'Adjustment Factor on Fillup'

[smartzuuk]

The only reliable way to use the fillup adjustment factor IMO is to:

a) calibrate the speed - you want this to match
b) leave the fillup adjustment at zero for about 5 fills/partial fills.
c) fill at the same pump/same direction, yada yada
d) keep a record of each tank as Scanguage shows it, distance, fuel used and mpg
e) after 5 fills - compare the actual receipts against the Scanguage totals - and if required, adjust as required to match the 'percentage of variance'

When I first posted this thread, it was partly due to the frustration of having adjusted the fillup based on a single result, and then seeing it needing to be adjusted again the next time, etc...

Now after 5 fills - I can see a trend - a real difference - and I will make a one time adjustment. I've also since learned that OBDII verus CANBUS in my car yield different results. OBDII is doing it off of sensors, so it is a reasonable estimation... most importantly - it is consistent...

I think the manual could be expanded a bit to help articulate these things clearer... none-the-less, I'm very pleased with it.