318 MAX fuel economy builds?

Hysteric said
Average of what? Average of what leaves the booster on that particular induction stroke? Average of what the charge is distributed to adjoining cylinders? Average of what is impinged on the manifoold walls? Average of what the cylinder actually gets? Average of what actually converts to a burnable afr?

Almost, so close.........

Because fuel is heavier than air, on the compression stroke the fuel gets pushed to the surface of the piston -- the liquid is closest to the piston as it is the heaviest, the aerosols will constitute the next laminar layer, then the dry fuel vapors, and at the top of the CC you have air.

I designed and milled a custom piston with a spark plug pocket to trap the heavier fuels. Honda recognized the most burnable AFR mix is around 13:1. They capitalized on that with their CVCC engine back in the 70's.