YOU ARE CLOSE ON THAT STATEMENT.
The air travels to the back, packs up there, tries to escape upward thru the slot. air continues to pack up in the first plenum, more of the slot feeds to the second plenum, finally the whole lower plenum has a higher pressure vs the second plenum due to the restriction of the slot.
So the 1st plenum sees a higher pressure vs the second plenum. The air might be more even to the runners but you take a hit on the pressure across the slot.
The bigger the slot the more uneven the airflow is until the restriction builds up.
So the design sound cool but in theory has flaws with delay to the runners initially under boost and wasted work (pressure higher in the 1st plenum vs even in one plenum design.)
We screwed around with the slot dimension for about 100 hours on the dyno and never could find the magic spot for the different Boost pressures we were running. Drag car / 1/4th mile race might be different for a 6 second run.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
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