I don't see that as smooth at all. Smooth would be curved peaks and valleys like the surface of the ocean.
To me this indicates that the individual vacuum plumbing to a vacuum chamber is a waste of time and energy. Others may disagree and read it differently.
In order to really determine the overall effect you would need to graph the MAP without that added plumbing. That would be the only way to know for sure if and how much dampening effect it is having.
As a result, that graph isn't telling me much.