I took a quick read through it, it is a pretty interesting read. I do agree in the way of fourstroke motorcycles. Trouble is the ports are so good already it would be hard to improve. I do not like that fact that it kind of pushes smaller being better when it's not always the case.
I have ported 5 banshees ( two stroke but hear me out) They say to leavt the runner of the exhaust port stock to increase velocity but open the port hole a little.(no need for specifics) anywho, I did not know this on the first one I did and opened the entire exhaust port up a little. Guess what, its the fastest of all of the ones I have done.
Often times in cars the port is so inneficient bigger is the only way.
If you are a do it your selfer, just clean up the ports and spend some time port matching. If you have the money, have a proffesional who has done dyno testing take care of it. Its hard to say what variables are involved in motomans thing, but I definatley give hime a thumbs up.
By the way, expert I am not, just my humble opinion.
