so what i have learned in some of my own searches is that the air moving down a runner (depending on runner volume) gains velocity and somewhere around 300 mph is top speed before it gets restrictive to flow? correct me on that if i am wrong
so when the piston is at bdc and all the air is in the air gains inertia and crams just a little more air into the cylinder before the valve closes and when is does is send a sound wave up the runner and if it is tuned ( which is the reason for the mathematical equations above stated) because if it is tuned right is will come back at the exact time the valve is opening again.
which this seems all honky dory to me but if it is a turbo application ( obviously off idle for arguments sake) does all of that just go out the window since the turbo is forcing air into the cylinder instead of tuning the runner to have all its ducks in a row for optimum flow?
