I was not able to see a way to choose AFR instead of lambda in the calibration settings. Here I am speaking of the tuning tables (am viewing in AFR in the scanner).
TIA,
Erik
I assume your refering to the C6101 table.
Edit---->Properties----->Air Fuel Ratio Calibrations-----> Check the "Display as AFR"
Then you'll need to close FlashScan and re-open it. I'm not sure if thats what you were looking for or not.