Frank you're still missing the total point of what the expansion chamber on a 2-stroke does so yeah he can keep blowing smoke up everyone's ass I know better and there's others out there that do too they just not going to entertain your closed mine.
Because her variables due to changing pressures and mixing to break down the fuel molecules in a 2 stroke.
So keep trying .
I suggest you ask your instructor.
That is if he doesn't just go buy a book.
Because most of the power in a two-stroke with expansion chamber Works off of the theories of a Pulse Jet.