Need to find out which hose goes into the A nipple below.

FYI already searched

 

Damn... My Profec B literally says "IN" and "OUT" next to the correct nipples.

 

Went to Greddy's website and looked through the installation manual. The hose that is coming from the IM is supposed to be hooked up to that empty nipple(A) on the PRofec control motor. My IM hose ends at the car's pressure sensor. So do I unhook that and plug it up to the PRofec or add another 3-way joint?