ID_ten_T

quick question, i noticed that the godzilla blow off valve has two ports on it, one on the top and one on the side. i was wondering, what are the two ports for? i am assuming that one of the ports is for a vacuum/boost source so that when the bov detects the throttle plate closing, it knows to release the pressure. but what is the second port for? thanks.

*cliff notes*
- godzilla has 2 ports
- one for boost, which one?
- what is the other one for?