Scangauge II Question

[BLBJBranch]

How does the SGII read mileage? Does it come from the truck's computer, or is it an estimate based on other information from the computer, such as burn rate?

I'm at about 250 miles for the tank and I notice there's a 7-mile discrepancy between the odometer and the gauge. I'm beginning to wonder if the odometer reads high (you know, so the truck will show more miles than it actually has in order to get to the end of warranty mileage faster).

Thanks.

[baseballfanz]

You do need to calibrate the SC. Either use milemarkers or GPS. My SC and trucks odometer is kinda off too but it's pretty close. The truck always read higher.
Honda just settle a class action lawsuit with their odometer, Nissan has one too I think.
http://www.cbsnews.com/stories/2007/...&attr=_2562144