Part of this has been discussed before and it was decided that the BOV should be mounted, in basically the only place to put it, on the metal pipe right by the turbo. I know where i'm going to run everything else but my question comes from this link: DIY BOV
He has a one way check valve installed on the turbo but i have actually heard that the ability to draw air backwards around the turbo at vacuum can improve response at idle. My question is: Is the check valve necessary and if not...is there any truth to what i stated about drawing air backwards at vacuum?
DIY BOV on stock piping
some BOVs are really loose when not under pressure, so that it sucks straight through them, like the Blitz one, that's why some have filters on them, so they can act like an intake, but that'd screw up the MAF, idle'd be a little funky, but you can always tune it,
atleast thats what I thought, and it sounds feasable
atleast thats what I thought, and it sounds feasable
man please dont waste the money on that plastic ricr valve like that spend a bit more and get a real BOv recirv valve and have a muffler shop weld on a flange to the hotpipe. mine attaches just like that in the picture but its 100X better its a turbo XS type h 34 its a recirculative valve or bov heres a picture!
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boost_boy
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Quote »I'm gettin' HKS SSQV,[/quote] I strongly recommend not doing that! That funky "Beat the seal across the head noise" blowoff valve has a bad reputation for leaking, getting stuck and being nearly worthless after 15psi. I know too many people that end up selling theirs because of the dramas it have. I'm not recommending these, but I use the older blitz units and they work just fine. I also have a pair of greddy type R BOV's that I'm going to be splitting up between the two cars (one greddy/one blitz per car).
slw240sx wrote:man please dont waste the money on that plastic ricr valve like that spend a bit more and get a real BOv recirv valve and have a muffler shop weld on a flange to the hotpipe. mine attaches just like that in the picture but its 100X better its a turbo XS type h 34 its a recirculative valve or bov heres a picture!
I think that'd be a waste for now. When i upgrade the turbo and get a FMIC i plan on going with a Greddy type R. For now though, i was going to go look for a 1st gen DSM BOV (they aren't plastic if i remember correctly) and just try and run a cheap set up that'll help out the turbo a bit.
Xero wrote:some BOVs are really loose when not under pressure, so that it sucks straight through them, like the Blitz one, that's why some have filters on them, so they can act like an intake, but that'd screw up the MAF, idle'd be a little funky, but you can always tune it,
atleast thats what I thought, and it sounds feasable
I won't have to worry about the funky idle with the MAF because i'll be recirculating it. The only place it could draw air would be after the MAF so it should have already taken that air into account.
boost_boy wrote:I strongly recommend not doing that! That funky "Beat the seal across the head noise" blowoff valve has a bad reputation for leaking, getting stuck and being nearly worthless after 15psi. I know too many people that end up selling theirs because of the dramas it have. I'm not recommending these, but I use the older blitz units and they work just fine. I also have a pair of greddy type R BOV's that I'm going to be splitting up between the two cars (one greddy/one blitz per car).
I hear bad things about the SSQV, but I've also seen alot of cars running them with no problems, so I'll draw my own conclusion, and go from there.