I have a BMW page in my favorites that also goes through all the technical jargon about slugs and pulses and snorkel tube length and such things. Not being an engineer, I can't argue with the math either. I have to wonder just how relevant all this techno-babble actually is when dealing with a 790 cc engine.
When that piston goes down and that intake valve opens, the cylinder is only going to take in as much air and fuel as is available. It doesn't care if Poisson's stagnation is in effect, it is going to try to suck whatever it can get. (I know, it's really atmospheric pressure...) Same with the exhaust, you can blow a lot more air thru a 1 inch pipe than you can a soda straw.
My point is unless you are fine-tuning an engine for racing purposes, I don't think we need to worry about the slugs and pulses etc. Match your inflow to your outgo so that your plugs burn tan and when you twist the happy handle you grin.
The 650 Bonnevilles didn't have air boxes, and they ran quite well....
