I was looking into non-air vented BOV's from stock cars for a custom setup on my Friends 300ZX TT. He's piecing together his car little by little and doesn't have 300 dollars for twin HKS SSQV valves just for the noise. He's going to run stock boost which I believe is 10 pounds. I know some people around here run over 10psi on our stock BOV. But He wants to know if the FD units will be upgrades. Given I haven't seen this done ever I have no clue, which is why i'm asking.

I also remember having read that the FD twins individually are a smaller turbo than our stock TII units. Does this mean the FD has smaller stock BOV, same size or larger?


Any concrete answers would be great. Thanks!

 

Well I went ahead and put down the money for a pair of FD BOV's and i'll do the comparison if you all don't come up with answer by the time they arrive.

 

The stock Z32 bypass valves should be good for at least 14psi.