hi u guys doing, new to the forum looks great, glad to be here, well heres my question, maybe be a dumb question but, i have a swapped T-II 91 in a N/A 90 Shell anyways i got a used apexi BOV on, and i've played with it a bit but the hiss doesn't really......well............hiss, after playing with the spring tension screw i kinda heard some hiss after rev the engine to near damn 7000 RPM now excuse my ignorance but isn't it supposed to hiss at lower RPM's????????????

and i was under the impression that it was supposed to be a clearly hear hiss, i mean i had to rev it hard to hear something and yes i can see the valve opening it's not like it's tightned to where the valve doesn't open, i was just under the impression that it should hiss louder and under a lower load on REV's???????

again it's Apexi BOV..........any ideas?????????????????

 

ooops i made a mistake it's a Greddy BOV