i think he means he is running standard boost pressures which is 7-8psi, and it wouldnt matter if it was getting 0-30psi, an atmo bov would work. the time it wouldnt work would be in vacuum.
as for them being shipped with the atmo bov's, they will be shipped with whatever is on the car in japan, its when they get here and you want to register it that it has to be recirculating. the amount of cars that get shipped with rediculous mods is astonishing