how to adjust bov

[hinggu]

does anyone know how to adjust a greddy type s bov?? my buddy is not too sure.

[Davetronz]

Ummm I am gonna go out on a limb here and assume that you want to adjust the spring stiffness???
If this is what you mean, you should be able to twist off the top cap to expose the spring. Then add some washers (they should have given you some when you bought it) beneath the spring to compress the spring more.

[2000impreza]

there isn't much to ajusting a bov.. tighten the screw on top until the piston closes at idle....

[buh_buh]

With the greddy type S, what you do is you loosen the nut, and turn the bolt so that less of it is showing (pushes down on the spring) then tighten the nut again.

[hinggu]

thanks