Intake manifold PCV hose

[Judge]

What is the purpose of the red hose? Other than creating a tug of war between the intakes during high load conditions? I've disconnected it and plugged the ports it was connected to (with the bank 2 PCV port still connected to bank 2 intake) and driven the car for a couple of miles to test. Idle, part throttle, WOT all seem to be ok.

 

Thanks.

 

Edited November 21, 2019 by Judge