I didn't even calibrate the SG2 and it's off like crazy. The only thing I calibrated was the engine size and the fuel tank capicity. I didn't calibrate the thing after every tank. Before it used to be within .1 of a gallon. Now it's off by .6-.9 of a gallon. My mileage is falling off like crazy!!!!!!
37MPG!!! Hell I pulled off 40 and 42mpg WITHOUT the SG2!!!
I think it's time to reset the scangauge. Check yours out too!
hummmm temperature compensated gas pump or you got a leak. One other possibility is the injectors are letting more gas per timed pulse because of the fuel has changed - we are on winter blend with summer temps that could cause more tank evaporization too.
Ted ? you kidding? The fuel used is a function of engine size and approximate values are setup by that entry but other factors affect actual fuel injected per pulse width so when you fillup there is an adjustment you can make for the number of gallons pumped vs measured by the SG.
Compaq888 - you need to find another gas station just in case there is a pump error.