Ive had my HKS SS BOV for a few years and it seems to work fine. My question is this:

Is the screw adjustment in the back to adjust the speed it reacts at or how loud it is or something?

I searched for this, yet no one really said what its supposed to do. Anyone wanna give an answer to this simple question????

 

its to adjts at how much vac it opens at you should adjts it so it just closes at idle

 

So the screw adjusts how fast the BOV reacts then? Or is it there to help control vaccum leaks at idle?

When i shift slowly on low boost, i get a slight chatter sound coming from the intake. It makes me wonder if the BOV isnt reacting fast enough to keep trapped pressure from going back into the turbo....

 

the more you turn it in the higher the vac has to be to open it. so yes in a way its how fast it reacts