@Jules V. This post is not about testing MPS, I came to this forum as a new owner of a Weber product to get tips on how to achieve max temperature in my Performer.
It is not feasible to test MPS on every grill. Based on my first two bakes on my performer, MPS did exactly what is intended/advertised to do, balance cooking rate of pizza top and bottom.
@HoosierKettle The logic behind the vent stack is to create a stack or chimney effect, a natural phenomena that occurs when the density difference between a hot and a cold air column creates a natural flow through a chimney. The greater the thermal difference and the height of the chimney, the greater the flow is forcing more air into the grill.