Some of the even more complex modeling of the LSx engines is not enabled on the L31 van, such as A/C Torque vs A/C pressure.
I suspect that may be due to the number of non-GM companies involved in building and selling van chassis vehicles. I've got A/C systems here from four different companies and there are multiple variations even then. Some of our cutaway chassis run three condenser fans drawing 30-40A, with front and rear blowers adding another 15A or so through hybrid evaporators with orifice tube front and TSV rear units.

What I find interesting is how Ford has handled some of it. Upfitters (body builders) are advised to obtain Ford reprogramming equipment and to download various calibrations for modifications such as larger alternator, dual alternator conversion, dual a/c systems, and possibly others. Much better IMO.

Hmmm... I'd like to meet the guy who's job was to motor an L31 to 8000 rpm to measure friction torque. ;)

If we ever get unburied from snow (we're only 8" from a record February, and they're predicting 6"-12" today and tonight) I'll check out some of my van cals just to see if there are any variations.

The ultimate goal here was to try and develop a model for the 3" stroke engine in my Suburban. It seemed so simple in the beginning...