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Old 12-10-2012, 09:13 PM   #1
flores412
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Join Date: Nov 2012
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03 wrx
black

Default Bov on 03 wrx

I know this is a dumb question but Its stuck in my head and I can't get a straight answer from anyone, will it hurt my performance on my wrx if input a tial bov on it or any other bov, if I get one I want it to be the best one so I'm not going to hurt anything performance wise, or just keep it stock and not even worry about it. Just a straight forward answer would be the best thanks. July current setup is unequal length headers, uppipe, Nicosia bell mouth down pipe full cat less exhaust, typhoon intake, and a pro tune at 15 psi I think that's all.
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Old 12-10-2012, 09:19 PM   #2
tommyson01
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Leave it stock.

But, for your reading pleasure/education:

BOV FAQ: The REAL dirt on BOVs. Ups AND downs. Lets dispell some myths.
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Old 12-10-2012, 09:44 PM   #3
flores412
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Alright thanks
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Old 12-10-2012, 10:40 PM   #4
Loyale93
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Read all the stickies above in the Newbie forum. That info was right at your finger tips.
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Old 12-11-2012, 09:14 AM   #5
jayman4312
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search intake silencer, remove it, you will be satisfied.
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Old 12-11-2012, 11:55 PM   #6
flores412
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I can hear my turbo spool I love it just wondering I was reading and some people say no some say yes some say it does more harm the good
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Old 12-11-2012, 11:58 PM   #7
drewvdw
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There's one guarantee with BOV's. They will NOT improve performance. Will they hurt performance? That's debatable. I choose not to chance performance for the sake of sound. Others may not feel the same.
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Old 12-11-2012, 11:59 PM   #8
flores412
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I have an aftermarket k&n typhoon intake so I believe mine has been removed
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Old 12-12-2012, 12:01 AM   #9
flores412
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Ya at drewvdw i have been contemplating it for years I still don't have one in a way I think it's a waste of money but sounds cool but that's an expensive sound
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Old 12-12-2012, 12:58 AM   #10
Thunderpaw
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Sounds cool is subjective
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Old 12-12-2012, 01:44 AM   #11
rob1n1
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Quote:
Originally Posted by Thunderpaw View Post
Sounds cool is subjective
But the only opinion that matters is his, because it's his car.
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Old 12-12-2012, 09:59 AM   #12
brew02wrx
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psm proper fitment

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Quote:
Originally Posted by flores412 View Post
I know this is a dumb question but Its stuck in my head and I can't get a straight answer from anyone, will it hurt my performance on my wrx if input a tial bov on it or any other bov, if I get one I want it to be the best one so I'm not going to hurt anything performance wise, or just keep it stock and not even worry about it. Just a straight forward answer would be the best thanks. July current setup is unequal length headers, uppipe, Nicosia bell mouth down pipe full cat less exhaust, typhoon intake, and a pro tune at 15 psi I think that's all.
Quick answer

Yes it will **** your **** up, you have zero use for one other than a stupid loud annoying sound.....when you go speed density or blow thru maf thats when you'll need one
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Old 12-12-2012, 10:51 AM   #13
vision.dynamix
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Quote:
Originally Posted by brew02wrx View Post
Yes it will **** your **** up


Set up a quality valve properly and you will not **** any **** up.

Lay off the Kool-Aid.
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Old 12-12-2012, 11:19 AM   #14
Mr Wrex
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Quote:
Originally Posted by brew02wrx View Post
Quick answer

Yes it will **** your **** up, you have zero use for one other than a stupid loud annoying sound.....when you go speed density or blow thru maf thats when you'll need one
Looks like someone needs to re-read the manifesto
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Old 12-12-2012, 01:31 PM   #15
drewvdw
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Quote:
Originally Posted by brew02wrx View Post
Quick answer

Yes it will **** your **** up, you have zero use for one other than a stupid loud annoying sound.....when you go speed density or blow thru maf thats when you'll need one
SD or blow thru MAF's don't even NEED one.
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Old 12-12-2012, 01:32 PM   #16
vision.dynamix
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Quote:
Originally Posted by drewvdw View Post
SD or blow thru MAF's don't even NEED one.
This is only true for Ball Bearing turbochargers.

And that has nothing to do with SD or Blow Through. You can run without a BOV/BPV with pull through MAF, too.
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Old 12-12-2012, 03:01 PM   #17
drewvdw
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I meant you don't need a BOV vs BPV in a SD or blow thru setup. Running without a BPV/BOV altogether is kinda stupid on a daily driven or even street driven car.
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Old 12-12-2012, 10:15 PM   #18
rocketperson7
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MBP

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^ unless you have a ported shroud turbo, then you really don't need a bov/bpv, like every single diesel turbo made, ever

I have a BOV, does it cause the wideband to turn into casino lights? yes
does it hurt top performance? maybe..but I have nothing to compare it to
does it knock? nope, but it's also not tuned to the ragged edge
why haven't I gone back to stock? money, and I'm going to SD

do what you want OP, good tuners can tune it to deal with it, especially with the 16bit cars (note: I did not say completely tune it out)
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Old 12-12-2012, 10:24 PM   #19
J-hop
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Unabomber has already covered this topic quite thoroughly in one of his stickied threads, read through that. I personally wouldn't run a BOV, Unabomber talks about the rich spike on spikes on shifts, I believe he states his tests show that a spike to about 9.5:1 afr is to be expected. I don't agree with the comment of that not being very rich as to me a 9.5:1 spike is pretty big (especially if you think about it in percent increase) but otherwise I agree with his analysis, (I understand he takes into consideration duration of the rich spike as well). I will search for the thread and post it, it might even be somewhere in his manifesto.

edit: yes he has a whole thread dedicated to it!!

http://forums.nasioc.com/forums/showthread.php?t=468038

Last edited by J-hop; 12-12-2012 at 10:40 PM.
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Old 12-13-2012, 07:48 AM   #20
vision.dynamix
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Davenow's BOV thread > Unabomber's BOV thread.

No offense to Ron, he's an ocean of information.
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Old 12-13-2012, 11:49 AM   #21
J-hop
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^ there you go, TWO great threads, no excuses!!!
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