A Bov Question

[Crackfox]

Hi guys, I have just bought my skyline r33 gtst s1 and have found out it has an aftermarket blow off valve on it. I had a look at it but being a noob at cars all I could find out about it is that it is an apexi unit.

I would like to know how/if I can tell if it is plumbed back or venting to the atmosphere, and if it is venting to atmosphere, can I get it plumbed back, or would it be easier to buy a stock bov? Dunno if this helps but it is quite loud at any gear changes above 2.5k rpm and yes the car does have an aftermarket air filter.

I'll also try upload a pic of it

[James_03]

It's a dual chamber apexi vent to atmosphere. Your better off finding another stock unit if you wish to return it back to plumb back and sell the apexi.

[and3_3]

Can u get a better photo? like looking down on it?

From that photo it actually looks plumbed back, u can see the hose clamp for the return hose

[HEKT1K]

build boost then back off quickly. is it loud? if so, probably venting to atmo

[and3_3]

i hav a standard bov on mine with a pod and its hell loud too

[James_03]

It's vent to atmo, you can look at it from any angle you like it won't change.

[and3_3]

then how do u explain the return hose on the right hand side....

[barnoon]

its atmo i have the same bov

[and3_3]

ok, still return hose wtf???

[shotter]

That hose will run under the BOV, It's not connected to the BOV at all and it's 100% vent to the atmo

[and3_3]

so its just there to fill the return line hole?

[TTT]

That Apexi can't be made in Plumback.. see th elittle holes around the red ring? that is how it is all the way around.

The different holes on the ring when dragged over the bov openings, will make a slightly different pitched noise.

the hose you can just see on the right hand side is the stock RB bov return line.

you can also see that it has a clamp which is done up meaning it's holding some sort of plug in there.

so to the OP, buy a stock R32, 33, or 34 bov and bolt it in.

remove tha block in the hose on the right of the picture.

the stock bov will have it's outlet pointing towards that hose and you push it in to the hose and clamp it all in.

[Crackfox]

Ok thanks for replies,last question, how much would the stock bov unit cost me approx and what could I sell the apexi one for?

[sick_skidz]

dont know what they are worth soz. got a bov question how much bost can the standard unit put up with cos i got a 35/40 garrett low mounted and got stock bov only running 14 psi boost and its now dumping to the atmosphere (shhh).

[kb-r33]

issit still the return hose line?

[N-DAWG]

Ok thanks for replies,last question, how much would the stock bov unit cost me approx and what could I sell the apexi one for?

I've got a stock R33 GTSt BOV, PM me if you're still after one