I have been running a Scan Gauge I on my 97 Expedition and 02 Focus for a few years now. I use it for CEL codes and such, but primarily for fuel mileage monitoring. The refresh rate is quick on the gauge and the total usage and average features are always DEAD on.

I am curious if the 2008 6.4 works with the Scan Gauge I or II. Any one here have any experience with it? How accurate is the Scan Gauge over the factory lie-o-meter?

Thanks
Vincent