Does an FD have two stock BOV's because I see two BOV's and look exactly alike? If it does have two how about when you install an aftermarket BOV do you just block the second one? Or if not whats the second BOV look alike and what does it do and do I need it or can I just remove it and block it? Thanks

 

The front one is a blow of valve and the rear one is the prespool vent valve .

 

So should I leave it there or can I block it? Does it suck it or blow out or what does it do can you explain? Thanks

 

LEAVE IT ALONE.. if you remove that your SEQUENTITAL system wont work right!
just dont mess with it...

do a search on it if you "want to learn about it"

 

this is one of the most discussed topics (by noobs). stop being lazy and search

 

I just installed my HKS SSQV in the stock BoV location today. I just left the CRV prespool vent alone like everyone says... but since it is just a vent, couldn't i get some sort of T and combine the CRV vent with the hose that leads to my HKS BOV???

I searched for that but i couldn't find an answer, has anyone done this? is it bad?

 

NO ! The CRV or pre spool is just that, a way for the secondary turbo to pre-spool. It will blow air to around 3to4.5 k then shuts. This put the boost the secondary turbo was making to the y-pipe where another control solenoid opens the butterfly in the y-pipe to combine the boost from both the primary and secondary turbo to the system. If you could combine them then you wouldn't need but one now would you.