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Old 09-01-2011, 11:00 PM   #351
SubieUUAREX
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Quote:
Originally Posted by Abadu16
Hey guys, I was wondering if any of you knew how I could make my BOV go off sooner I'm pretty new to this stuff but I'm sure there is some way I could get it to go off at less than 5 grand.This might have already been answered but I haven't seen it and I got tired of looking.

-Thanks
Buy a new BPV and change the spring. You can't modify the stock one from what I understand. Even then your car might die. I could be wrong thou.
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Old 09-01-2011, 11:17 PM   #352
jeremy1992
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just got on my type h and when i get into boost it makes an god awful, loud whining noise, almost sounds like a supercharger :/, whats goin on
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Old 09-06-2011, 11:51 PM   #353
wrsex02
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great write up!
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Old 09-07-2011, 03:27 PM   #354
Jondoe1980
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I have a feeling that I need to take the HKS blow-off valve off that the previous owner installed.
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Old 09-17-2011, 03:49 PM   #355
L37
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Default Noob here..

I am new with Subaru's...just got my '11 WRX. Before I ask any questions related to installing BOV's, I was wondering what does Subaru have in a stock WRX to deal with compressor surge (if anything)? I heard they have some sort of recirculating system, but I wanted to check.

Thanks
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Old 09-18-2011, 03:26 PM   #356
slamdspec
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Quote:
Originally Posted by Jondoe1980
I have a feeling that I need to take the HKS blow-off valve off that the previous owner installed.
My 02 had a greddy bov on it when I bought it. It ran like crap but I spent some time tuning it and now it runs great with out any problems.
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Old 09-19-2011, 03:13 PM   #357
SubieUUAREX
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Quote:
Originally Posted by L37 View Post
I am new with Subaru's...just got my '11 WRX. Before I ask any questions related to installing BOV's, I was wondering what does Subaru have in a stock WRX to deal with compressor surge (if anything)? I heard they have some sort of recirculating system, but I wanted to check.

Thanks
Its called a By Pass Valve. Leave you Rex the way it is. Unless your pushing 350+ WHP with 20+ PSI of Boost then the stock unit will be just fine. You'll kill your car before you ever really had it going to a BOV being stock!
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Old 09-19-2011, 08:13 PM   #358
Subieeeeeeee
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love my turboxs rfl
anyway great post. really straightened out some stuff.
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Old 09-22-2011, 03:10 AM   #359
dking240sx
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hey guys just got my subbie and i guess who had it left the oem bov open so it swhosshes out and the block the recuircutlatory hose up with a battery???? is that ok or should i get that fixed??
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Old 09-23-2011, 03:14 AM   #360
mrandmrslaw
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Hi everyone ,

It seems i have to start it from some where , i just bought the STI 2008 and i installed HKS III BOV , Here what i got : It didnt surge any noise when i shifting 1st gear to 2nd gear. it didn't surge on any lower RPM below 3000. It does surge on high rpm.
Did i install it properly ? , I put TurboXS blanking hose , tighten vacum lines.

Is this suppose the BOV running ?

As i remember long time ago , A wrx like surging bov on lower RPM when it change the gears.
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Old 09-23-2011, 03:47 AM   #361
dking240sx
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will an aftermarket bov give u a rough idle?
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Old 09-23-2011, 07:25 AM   #362
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Quote:
Originally Posted by SubieUUAREX View Post
Its called a By Pass Valve. Leave you Rex the way it is. Unless your pushing 350+ WHP with 20+ PSI of Boost then the stock unit will be just fine. You'll kill your car before you ever really had it going to a BOV being stock!
How much power you're making has absolutely nothing to do with anything. And a properly working valve won't "kill" anything.

Quote:
Originally Posted by Subieeeeeeee View Post
love my turboxs rfl
anyway great post. really straightened out some stuff.
RFLs are highly leak prone.

Quote:
Originally Posted by dking240sx View Post
will an aftermarket bov give u a rough idle?
Stalling or unstable idling, it can.
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Old 09-27-2011, 06:10 PM   #363
rex1502
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Default BoV

If you inner Rice boy soul need to here the sound of a atmoshere BoV, CoBB sells a 50% Recirculating 50% Atmosphere BoV it recirculates just enugh for the Mass air Flow sensor and 50 for just a nice whoosh. Hope this helps
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Old 09-28-2011, 07:19 AM   #364
MY EJ20TTTTTT
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[quote=Byzantium;35187375]RFLs are highly leak prone.

quote]


I often times wonder who comes up with this stuff? I was at IAG Performance and they told me this too, with little to no proof.

Leak? How? Like leak around the gasket? Around the intercooler flange? Or around the piston? If the spring pressure is adjusted for your car to keep it shut during idle and high boost, How does an RFL leak? Lets see a video or pictures before misleading members. Thank you.
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Old 09-28-2011, 01:58 PM   #365
hi-revs
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Wondering if a BOV should be venting/blowing off when revving in neutral, or JUST under boost?

Thanks.
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Old 09-28-2011, 02:16 PM   #366
BHutch
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When you rev in neutral it still creates boost. The only difference is your car is not under load like being in gear. So yes if you rev it high enough it will vent.

Quote:
Originally Posted by hi-revs View Post
Wondering if a BOV should be venting/blowing off when revving in neutral, or JUST under boost?

Thanks.
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Old 09-28-2011, 11:24 PM   #367
scooby_st
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fwiw i installed a turbo xs rfl bov it works great no leaking or idle issues. Also im fully catless and the "backfires" are far and few between. When i was getting my car tuned my ots map was acually running a tad lean...go figure?
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Old 10-06-2011, 05:51 PM   #368
dking240sx
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i just installed a aps 50/50 bov...im ok with it i didnt see or hear a difference!! any one have one of these
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Old 10-07-2011, 12:23 AM   #369
jesseber
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I have a GFB deceptor on my 05 stage 2 STI and I have it set to full volume because I love the sound. I recently heard that venting all of the air out like that can cause turbo lag between shifts under heavy boosting. Is this true?

Thanks
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Old 10-07-2011, 12:43 AM   #370
NSFW
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Set it to full recirc, drive it for a few days, decide for yourself.

I don't think it affects spool/lag one way or another but the rich stumble was a big enough annoyance that I went back to BPV.
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Old 10-09-2011, 07:23 PM   #371
amalgrover
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Quote:
Originally Posted by dking240sx View Post
i just installed a aps 50/50 bov...im ok with it i didnt see or hear a difference!! any one have one of these
if you haven't noticed a difference in the sound between the stock bpv and an APS 50/50, you either have it setup with the block off plate, or something isn't working right...the two valves sound completely different in terms of actual volume...
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Old 10-10-2011, 12:05 PM   #372
MartinDrummer
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Ok so I read all your post and I thought it was very good, thanks! But here's the thing.. I just bought a 2011 WRX and Im not really interested in increasing boost or doing a lot of things to the car... Maybe full exhaust, bov, intake and some basic/cosmetic changes.. I'm not interested at all in chips or computers or nitro or any of that.. I want my car to feel GOOD and SAFE and also its my everyday car and I drive around 30 to 35 miles per day.. So here's is my question to you Davenow:
I want to add a BOV because I enjoy the sound, I dont really care about getting any attention or w.e. I could care less about people seeing my car lol But the thing is that I want a GOOD quality BOV and that wont mess my engine since is very new and I'm thinking about doing more than 3 o 4 things to it.... So what do you think about the:

Subaru Recirc Blow Off Valve

Price:
Part #: $299.99
PSP-INT-610

This one is for 2011+ WRX which is perfect for me since I have a 2011.... So what do you think about this BOV is it any good? will it damage my engine or w.e. ? Thanks again for the post and for responding(hopefully lol)
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Old 10-10-2011, 12:48 PM   #373
amalgrover
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if google served me correctly, that is the perrin recirc blow off valve which is actually just a bypass valve like the stock one is. so getting this will do nothing for the sound really. i've heard that the perrin increases the sound slightly, but honestly, it is going to be a waste of money for the setup you have. the tial valves are definitely quality VTA blowoff valves, and although some tuners have had issues with them, most the sequential valves on the market are pretty decent. basically, BOV's aren't as bad as everyone in the subaru community make them out to be, and as long as the valve isn't leaking and is adjusted and installed properly, it shouldn't give you any trouble really. just in case you were wondering, i run the HKS SSQV-I and i have ZERO issues with it...no stalling when coming to a stop, no surging at idle, no overly rich conditions, and my subaru didn't spontaneously combust when i installed it...go figure ...been running it for a little over 50,000miles now (30,000miles on my stock motor and a little over 20,000 miles on the built motor)
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Old 10-11-2011, 12:59 AM   #374
MartinDrummer
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Quote:
Originally Posted by amalgrover
if google served me correctly, that is the perrin recirc blow off valve which is actually just a bypass valve like the stock one is. so getting this will do nothing for the sound really. i've heard that the perrin increases the sound slightly, but honestly, it is going to be a waste of money for the setup you have. the tial valves are definitely quality VTA blowoff valves, and although some tuners have had issues with them, most the sequential valves on the market are pretty decent. basically, BOV's aren't as bad as everyone in the subaru community make them out to be, and as long as the valve isn't leaking and is adjusted and installed properly, it shouldn't give you any trouble really. just in case you were wondering, i run the HKS SSQV-I and i have ZERO issues with it...no stalling when coming to a stop, no surging at idle, no overly rich conditions, and my subaru didn't spontaneously combust when i installed it...go figure ...been running it for a little over 50,000miles now (30,000miles on my stock motor and a little over 20,000 miles on the built motor)
Well that is really helpfull and shocking lol I was honestly ABOUT to be the Perrin BOV before I saw your respond, thanks man really apriciated!! im gonna look into the HKS bov and look for a shop were they can set it up correctly and not do anything wrong... Any other tips available? Thanks again for responding !
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Old 10-11-2011, 01:55 AM   #375
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Quote:
Originally Posted by jeremy1992 View Post
just got on my type h and when i get into boost it makes an god awful, loud whining noise, almost sounds like a supercharger :/, whats goin on
boost leak, check everywhere from compressor outlet to throttle body.
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