Hi Richard, I have also noticed that the difference in IAT between WMI and no WMI is usually no more than a degree or two. From this I gather that most of the gains I am seeing is due to the in cylinder effect of the WMI.

With regards to the IAT and EGT compensation inputs you mentioned, I gather the HSF4 has the capacity to adjust the WMI flow rate. Could you elaborate on how these control functions are programmed?
If these inputs do allow the HSF4 unit to make flow compensations/corrections based on IAT and EGT, I’m looking to gain an understanding of the limits they operate within and any predetermined set functions assumed.