Not sure.. mighta been the same thing. I was looking at it more from a "relative" perspective, to gain a better understanding on the relationship between the different cam grinds, different manifolds, different heads etc.. not necessarily an absolute. To my way of thinking, only way to obtain absolute is for your application to be dyno'd, using the components you put it in, at the altitude you operate at, with the gas you use etc...

Just a good tool for getting relative info and more knowledgeable.

Mike