I read in a recent post that the $6E based it's fueling entirely on airflow. I guess I don't understand this, how does the $32B justify it's fueling process compared to the $6E?

The $32/$32B mask can calculate the PW directly from the airflow, same as the $6E mask. Or it can use a 3D lookup table of PW's based on RPM & LV8. Which method to use is selected by an option bit in the calibration area of the mask.

With the release of $6E the ability to use a PW lookup table is no longer present. The PW is always calculated directly from the airflow and engine RPM.

RBob.