Ford's values for VGT%
High idle=43 High idle for this is 2500 rpm
Operating Range=0-100 %
I did a "poll" on this topic on another forum. Interesting discussion on VGT%
I didn't go low enough for a lot of voters, as I found out. Mine was pegging 85%. Even with a new turbo. Now, with some time on the new turbo, my VGT% is running about 76%.
Never could get it figured out as to what causes the 85%, or what to change.