I've been using system 2D for several years.
Recently I added a
Digital Pulse Adjuster on signal stream before the 2D controller. So I can adjust the signal it sees, thus the WIDC.
Here is the recent map:
The 2 vertical dotted lines indicate the approx. WI operating range. I'm running a pretty high w/f ratio of 25~30%....
The whole system still works on the fuel injection pulse signal, & like CnC said, engine load info is already in it.
Now it's working very well.