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Old 11-17-2006, 10:07 PM   #1
Scooby Newbie
Member#: 121166
Join Date: Jul 2006
Subaru Stars Pros and Cons of a Blow Off Valve

I'm looking into putting a blow off valve in my 04 WRX. Is there really any benefits in putting a BOV in? A friend told me that it could lead to Premature Engine Failure? Is that true? Can someone help me out and let me know what the pros and cons are?
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Old 11-17-2006, 10:21 PM   #2
Oldfart Racer
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Member#: 84064
Join Date: Mar 2005
Chapter/Region: MAIC
Location: Hagerstown,Maryland
2002 WRX VF30 Wagon


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Old 11-17-2006, 10:35 PM   #3
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Member#: 82989
Join Date: Mar 2005
Chapter/Region: SWIC
Location: Arizona
2002 WRX
Hybrid EJ257


Oh my hear we go again.
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Old 11-17-2006, 10:56 PM   #4
*** Banned ***
Member#: 119526
Join Date: Jul 2006
Chapter/Region: MAIC
Location: West Virginia
2002 WRX


lol I love when people start asking about bovs. Dude bovs are not needed for s wrx unless you have a mass amount of psi. Bovs only become problems such as richness between shifts and idle problems. If your only going to put that bov on for the sound then think again.
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Old 11-17-2006, 11:03 PM   #5
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Member#: 99790
Join Date: Nov 2005
Chapter/Region: MWSOC
Location: Stl, MO
02 WRX Aspen White
OT Ninja


well if you get a blow off valve you get to hear that awesome sound

if you dont.............

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Old 11-17-2006, 11:09 PM   #6
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Join Date: May 2005
Chapter/Region: MWSOC
Location: NW, Indiana
08 Stg2 9.5's 275s


oh good christ.
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Old 11-17-2006, 11:27 PM   #7
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Join Date: Sep 2005
Chapter/Region: NWIC
Location: Pasco, WA
sold to a good bud
awaiting next car


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Old 11-17-2006, 11:54 PM   #8
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Member#: 49362
Join Date: Nov 2003
Chapter/Region: Tri-State
Location: Blackwood, South Jersey
2013 DGM STI
Cobb Stg 2


This same question was posted on a Subaru WRX STI group on myspace...
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Old 11-18-2006, 12:00 AM   #9
Scooby Newbie
Member#: 121366
Join Date: Jul 2006
Chapter/Region: MWSOC
Location: Milwaukee
06 STI


Well the BOV gives the STI a totally gnarly awesome sound and at least eleventy billion more hp at the crank but only like 72 more whp. On a wrx its even more and is so loud it makes deaf babies cry. I would get 2 or 3.
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Old 11-18-2006, 12:01 AM   #10
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Member#: 121166
Join Date: Jul 2006
Thumbs up

OK! No more explinations needed... i guess a BOV is definately not on my list of things to mod my car with....THANKS EVERYONE!!!
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Old 11-18-2006, 12:06 AM   #11
Subie FA20
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Member#: 72195
Join Date: Oct 2004
Chapter/Region: Tri-State
Location: NJ
2016 Golf R DSG
Oryx White Pearl


my god.... all you bov freaks go shoot yourselves. take 2 minutes out of your damn lives to scroll through some threads and/or search and you'll find all of your damn answers.


Atmospheric= BAD; very bad! It kills little puppies and priests touch little boys; also makes the car run like ass
Recirculated = GOOD; makes the car NOT run like ass

Unless you're making a lot of power (spending money on performance parts; not some BS sound effects), you don't need a BOV. Buy a damn intake and there you go! instant louder BPV that sounds somewhat like a BOV and you hear the turbo sucking like a true champ.

In conclusion; each time you make a BOV thread, you kill 100 puppies. Feel happy now?

DIE!!!!! lol
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Old 11-18-2006, 12:15 AM   #12
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Member#: 59287
Join Date: Apr 2004
Chapter/Region: TXIC
Location: Houston, Tx
2007 WRB WRX
2004 WRB WRX (RIP)



Run pig rich, and blow chunks of cats into turbo.
Have poor idle, and poor off idle acceleration.
Be almost unable to tune properly.
Attract police attention.


14 year old boys think your COOL!
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