Blow of Valve setup GTR

[shaqrx3]

I just wanted to ask what is the best blowoff valve setup for an r32 GTR.

I have a greddy type R . (i havent put it on yet)

Is it better to run two bov's or just a single ?

[lwells]

Almost everyone believes the stock GT-R BOVs are the best.

[DJ984]

but they sit open at idle (sucking in air AFTER the afm) so you can't vent them directly to atmosphere (learnt that the hard way)... they suck air in at idle causing stalling and rough as guts idle.

mine had an adapter kit put on them from the previous owner in japan. they vent to atmo and cant suck in any air

[TTT]

so you just wanted sound?

anyway,

shaqrx3 - factory bovs are probably the best setup you will get.

but if you must upgrade and want sound, the single greddy type R is fine. it is huge and it will flow more than you will ever make..

Let me know when you want to sell your stock ones.

[PurpleR32]

best to keep the stock ones.

sound = defect = have to put stockies back on anyway = big waste of time & money.

[Blitz]

Factory ones are usually fine for most applications.

That said im using the single Greddy Type R setup on my car, no issues at all

[PHATR32]

i got a set of hks ssq and they sound pretty good, and arnt real loud either.

[MELV]

but they sit open at idle (sucking in air AFTER the afm) so you can't vent them directly to atmosphere (learnt that the hard way)... they suck air in at idle causing stalling and rough as guts idle.

mine had an adapter kit put on them from the previous owner in japan. they vent to atmo and cant suck in any air

yes they sit open at idle, which makes tunning a hell of alot easyer.

ask any one that tunes gtrs with AFM's. if you have bigger than stock turbos or BB turbos its hard to get the idle right with an aftermarked BOV.

i had that problem when i got the new turbos on mine, they couldnt get the idle right, because the BB turbos are still spinning damm quick after a bit of wide open throttle.

i also see it as helping the turbos as well, the plumb back system flows air after the intercooler back into the intake. so its breathing in cooler air

just my 2c anyway.

[archie01]

I have the Greddy one on mine.

No issue with it leaking and I don't get that 'psht' sound that you usually get from external venting bov's which i like.

[R31Nismoid]

as everyone has said... i jsut wanna say it too!

stock ones are best

[fsmout]

hey man, i have the greddy in a single setup, but i have also heard that the stoke ones are the best

cheers,

Francisco

[maverick]

anyone know where i can get stockies? ive got blitz one and theyre huge...but then again the BOVs are placed where most cops wouldn't look

[lwells]

anyone know where i can get stockies? ive got blitz one and theyre huge...but then again the BOVs are placed where most cops wouldn't look

They pop up every now and then when rice.. err.. people replace the stockers with aftermarket ones. Just keep an eye on the forsale section.

Lucien.

[yaf28f]

I have twin HKS super BOV, surprisingly they are not that loud with 14 psi.

but they came with the car. only thing I don't like is that they are way too 'out there' if a cop opens the bonnet.

[Boosting]

I got two greddy type rs bovs, not as loud as i wanted byt good, just plugged up plumb back system and got flanged made up to bolt them onto factory postion

[R31Nismoid]

They pop up every now and then when rice.. err.. people replace the stockers with aftermarket ones.  Just keep an eye on the forsale section.

Lucien.

yer, the for sale forum has then come by often enough for a few people every month or two etc.

But most people keep them i think as they know they are arite

[lwells]

yer, the for sale forum has then come by often enough for a few people every month or two etc.

But most people keep them i think as they know they are arite

True, but given the prices on NS (as low as $150 for a "hybrid" copy FMIC) I doubt there is going to be many used ones much lower on here

LW.

[xRHETTx]

How are they open at idle, are they electronic? Theyre obviously pretty different to the GTSt bov?

[R32-GTS]

They hold open at idle and at light throttle loads. Im pretty sure gts-t bovs work in the same way as they sit half open at light throttle and idle. not 100% sure though.

[TTT]

correct.

all factory plumback bovs are open at idle.

They constantly recirculate the air at idle and off boost cruising.