BOV limits

The big weave · Post by **The big weave** » Tue Aug 18, 2009 12:37 am

Looking to do some upgrading, what is the stock BOV good to for boost levels, before it starts leaking?

gijonas · Post by **gijonas** » Tue Aug 18, 2009 12:52 am

Probably a lot.Just throwing my guess out there.

RJ93SS · Post by **RJ93SS** » Tue Aug 18, 2009 2:51 am

i think i read about 15-17 psi

The big weave · Post by **The big weave** » Tue Aug 18, 2009 2:59 am

I was asking what it will hold before it leaks.

RJ93SS · Post by **RJ93SS** » Tue Aug 18, 2009 5:27 pm

as said above. 15-17 psi

asc_up · Post by **asc_up** » Tue Aug 18, 2009 8:13 pm

As RJ said, about 16 PSI. Anymore than that and they tend to crack.

BSOD2600 · Post by **BSOD2600** » Tue Aug 18, 2009 9:55 pm

The plastic externally or internally cracks? The sign of a faulty BPV is?

asc_up · Post by **asc_up** » Tue Aug 18, 2009 10:17 pm

BSOD2600 wrote:The plastic externally or internally cracks? The sign of a faulty BPV is?

Internally.

When you get into boost but it doesn't hold, so you swap out the BPV with a different one and you're able to hold boost. Lol.

BSOD2600 · Post by **BSOD2600** » Wed Aug 19, 2009 1:23 am

Alright, that being the case, shouldn't a lot of us with the revtronix stage 2 chip have this occurring? Or are a lot of you running aftermarket BPV/BOV ?

gijonas · Post by **gijonas** » Wed Aug 19, 2009 1:43 am

Or are a lot of you running aftermarket BPV/BOV ?

I had the concern and got a greddy.Never even tried the stocker.

asc_up · Post by **asc_up** » Wed Aug 19, 2009 2:48 am

I'm running an HKS. I'm not saying that it won't hold at all, it's just how long it will work for at that pressure.

RJ93SS · Post by **RJ93SS** » Wed Aug 19, 2009 2:56 am

i ran mine ofr a month but only at stage 1. It doesn't take much for a plastic unit to leak. neither my blitz or my hks leak at stage 1.5

BSOD2600 · Post by **BSOD2600** » Wed Aug 19, 2009 6:55 am

Hmm, wonder if mine is starting to leak... noticed lately is more noisy while on boost (air noise), but my boost during WOT seems solid enough.

Mattheww044 · Post by **Mattheww044** » Tue Jan 26, 2010 7:14 am

I am wondering if mine is leaking now too. I took it off awhile ago and i could BARELY blow through it like at all, I know your not supposed to be able to "at all", but there was a "tiny" leak, but I had no issues with boost. A few months later and here I am. Once i get into the higher RPMs, it will drop 3-4 psi before shifting, sound like a leaking BPV to anyone else?

ciper · Post by **ciper** » Fri Jan 29, 2010 4:51 am

I know that my02+ WRX units handle high pressures in stock form and even more when crushed in a vice. Its not hard to find adapters that make a flange on the inlet side and these units are very easy to find used.

macipusy · Post by **macipusy** » Wed Feb 03, 2010 11:20 pm

I have blown up quite a few stock BPV, even running 12-13psi for an extended amount time.

Mattheww044 · Post by **Mattheww044** » Thu Feb 04, 2010 2:19 am

yea, I have an Sti BPV (same as your WRX I was told), but Im waiting to put my TMIC on and just do it all at once. Make things a little easier. THe WRX/STi ones are metal though, the stock Leggy ones are plastic.... BOO!!

SubiePrice88 · Post by **SubiePrice88** » Fri Feb 05, 2010 4:03 am

macipusy wrote:I have blown up quite a few stock BPV, even running 12-13psi for an extended amount time.

same here. Im going on my 3rd now

SubiePrice88 · Post by **SubiePrice88** » Fri Feb 12, 2010 4:24 am

whats a good BPV to replace the stock one?

Mine leaks bad and I cant find any good used ones anymore.

Looking for something that will last longer and take higher boost (10+psi) and for a good price

what about this? Legit or not? http://www.siliconeintakes.com/product_ ... a09d4ae070

555BCTurbo · Post by **555BCTurbo** » Fri Feb 12, 2010 4:46 am

I ran a stock one at 20 psi with no problems.

Post by **Legacy777** » Fri Feb 12, 2010 4:50 pm

Ditto. I'm running stock BPV at 20 psi without any problems.

brweber352 · Post by **brweber352** » Fri Feb 12, 2010 6:46 pm

This is a great topic and I've been wondering about BOV limits myself recently. From my understanding(which is not always 100% spot on) the BOV/BPV serves two main puposes, staying shut to hold boost and opening quickly to keep the boost from backing up into the turbo.

When does the stock BPV inlet/outlet size become a limit for proper venting? Does this become a bigger concern with higher boost or when you increase the intercooler volume(FMIC), or a combination of the two.

Brian

SubiePrice88 · Post by **SubiePrice88** » Fri Feb 12, 2010 10:44 pm

whoa... NEW BPV from Subaru is $70.00

Bdub · Post by **Bdub** » Fri Feb 12, 2010 10:59 pm

I picked up a VW aluminum one on Ebay. It works very well, although the dia. is larger than stock, so hoses need to be adapted to work with it.

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BOV limits

BOV limits