Perhaps I was unclear. Yes, I do indeed populate the stoich point scalar/table. ("B3601" as you guys are calling it, I'm still used to generic table names instead of the EFILive specific alpha-numerics. GM has a COMPLETELY different naming structure in the source code)
The one and only time I use actual AFR numbers is at the very beginning of the calibration process. I ask the owner "What fuel is in the tank?" and use his answer to start with a reasonable value for B3601 (see, I'm catching on to your naming system). If he says "I use Sunoco 94 all the time" I know that it's e10 and use a value of 14.13 for B3601. From there on out, it's lambda and EQR for datalogging and table values in the open loop/PE fuel demands.
As an added bonus for the DVD buyers, I included a text file with the stoich points for a bunch of common race fuels as well. The process for tuning C16 is not any different than e10, it just centers around a different stoich point (B3601).