well, i did it again! got my Scanguage all screwed up with setting and changing the fuel adjustment. i'l never learn i guess. i gotta get it pounded into my head to use same refueling everytime. i been touching the adjustment and even though i know my mileage is still the same. i get diff reading and then i mess around and change some setting and then something else and now i got it all outa wack! so i read the manual and can go back to default setting which basicly resets everything and it's like you first get the S.G and have to go through the setup. once i get it set i might send it in to have it upgraded with x-guages if there's any there that can be of use to me.