DJ,
How about you use that fancy AE package you have and put it to use!
Here's what you do.
1. Drive in 3rd gear at 45 MPH; no load, not accelerating. Check the Mass Fuel Desired by what the datastream says.
2. Same test...only in 4th gear.
3. Use the MFD data and calculate over time and engine speed.
4. It's not the most accurate, but it may give you an idea.
I have a Genisys sitting here, but it's cold and snowing out.