Yeah, as I figured. But since things like head flow are constants for a given chunk of iron, i would be using it more for what-ifs surrounding camming and general behavior around flow restrictions. Not so much to design an engine, but to see the effects of changes in duration etc.

Yep, one of my engines of concern is siamesed port (trough intake too).

Do you think it's a total waste of time even for my intended uses?