This graph tells me that the greatest load on the Engine is at 4700 rpm.
It is at about 200 load and 25 deg timing.
This would mean that cyl pressure at 3500 rpm (190 load, 22 deg timing) is lighter on the Engine which we can see in TQ graph as well.
Boost is the same at 24 psi from 3500 rpm to 5000 rpm as is fueling 12 afr.
My question is. Am i right in my conclusions?