Originally Posted by barnbridge
On my scangauge there was a setup screen where I had to choose between a few fuel options, something like gasoline, diesel A and diesel B. I didn't know which diesel setting so I tried one of them and it didn't work. By default the other works great. I don't think there is a readout for fuel pressure.
On the NGS there is a PID for "Instant Fuel Economy".
It displays in MPG (yeah, whatever), but is actually very good at finding the mileage sweet spots and troubleshooting low mileage areas while live tuning.
Of course, for the 6.0 you won't be able to live tune (unless you work for Ford MoCo), but you'll still be able to use it as a tool to help tune for improved mileage.