I get the theory, but wouldn't you want to direct flow to #7 since #5 starts pulling on the plenum first? Does David Vizard have data that corroborates this method ( I'm guessing in a SBC ) ?
The timing is that 7 starts pulling early enough that it robs from 5 before 5 is done drawing in the air-fuel charge. So ya' gotta keep as much on the 5 side and try to inhibit 7's tendency to pull from 5, too.
IIRC, he says it reduces the need to stagger-jet for that corner of the intake. Makes me wonder if something should be done for the 2/1 divider, even though they're on opposing sides of the plenum.
