MFD clarification

[cowboy_dan]

First off, I don't have Minotaur, but am considering it. In the mean time, I'm trying to learn.

I understand the basic fuel rate unit is known as MFD.
And, the graph:

http://i641.photobucket.com/albums/u...TowingMFD2.jpg

indicates to me that this is not an actual number, but rather a percentage.

Now, for the fun part: What is it a percentage of? A fixed value, a value that changes with RPM only, a value that changes with RPM and MAP?

Like I said, I don't know nuthin', so I'm just learning.