Hks EZ boost controller,
I know the 4mm port goes to the fanimold to measure boost, I know one of the larger 6mm ports ( cant remeber the numbering at the moment

) comes from the actuator feed,
My question is can the return just be vented straight to atmosphere because it is surely just diverting pressure from the actuator until required boost is achieved, yes?
Sorry if its simple but so am i

still a bit new to this turbo lark