I think I have 99% of the maps found and labelled now.
I have a 2004 ford transit, VISTEON ECU.

I am struggling with my SOI map as I cannot figure out the Y axis.

I have seen example of SOI maps where rpm x load or IQ x load.

can anyone help with a factor for Y axis? or at least tell me what parameter the y axis should be?

There are 5 maps, selected by coolant temperature.

These are SAME engine as mondeo mk3 but with a "commercial" tune





any help appreciated