substitute for a BOV? - Subaru WRX Forum
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post #1 of 20 Old 02-23-2011, 01:00 PM Thread Starter
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substitute for a BOV?

i just got a new 2011 WRX and ive only heard bad things about getting an aftermarket environmental BOV. so i was wondering if theres an alternative to give my turbo a more aggressive sound or a louder "blow off" without replaceing the recirc valve? i was thinking an intake would help a bit, but is it really noticeable?
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post #2 of 20 Old 02-23-2011, 02:56 PM
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An intake helps A LOT with hearing the stock BPV/BOV

Mike
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post #3 of 20 Old 02-23-2011, 04:16 PM
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Upgrade the intake, the turbo, the I/C, the turbo and everything in between (lol, it will be a symphany under your hood then). But an intake will help with the sound.

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
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post #4 of 20 Old 02-23-2011, 06:39 PM Thread Starter
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yah i dont want to dig too deep into aftermarket internals just yet, because then i have to remap my car. just looking for simple upgrades that make a noticeable improvement in sound more than performance. this is my first wrx so im still trying to get the feel of it before i turn it into a monster
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post #5 of 20 Old 02-23-2011, 07:06 PM
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I can understand that, honestly I can.n Either look into a new SRI (short ram intake...i.e Cobb) or look into a panel filter and a "silencer delete". Very popular for the older gen subarus.

Joshua
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Cobbtuning.com"
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post #6 of 20 Old 02-24-2011, 10:46 AM
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My new turbo inlet made my BPV WWAAAAAAAAAAAAAAYYY too loud for my personal tastes. It's obnoxious. Before the inlet it was silent.
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post #7 of 20 Old 02-24-2011, 11:47 AM
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^^ Was it silicone or your favorite (APS)?

Paul
2002 WRX Sold
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post #8 of 20 Old 02-24-2011, 03:14 PM
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intake will definitely do the job, BUT, you must get a tune. I had Perrin's intake on my '10 WRX without a tune and lost power and got an occasional sputter. Perrin's website states their intake is safe without a tune, which it probably is, but you'll lose power for that safeness.

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post #9 of 20 Old 02-24-2011, 11:32 PM
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Quote:
Originally Posted by pzr2874 View Post
^^ Was it silicone or your favorite (APS)?
Perrin

Quote:
Originally Posted by sicc_soul View Post
intake will definitely do the job, BUT, you must get a tune. I had Perrin's intake on my '10 WRX without a tune and lost power and got an occasional sputter. Perrin's website states their intake is safe without a tune, which it probably is, but you'll lose power for that safeness.
And that has been proven to be a flat out lie on their part.
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post #10 of 20 Old 02-25-2011, 05:43 AM
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the safe without the tune being a lie... or the loss of power without a tune?
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post #11 of 20 Old 02-25-2011, 07:03 AM
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The safe without a tune part.

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
Stage 2 2005 WRX
Cobbtuning.com"
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post #12 of 20 Old 02-25-2011, 08:11 AM
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Yep, intake makes it noticable but not too loud (for some it may be too loud). Add an inlet and then you're talking really loud.

-Chris
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post #13 of 20 Old 02-26-2011, 12:58 PM Thread Starter
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that sounds about right.. i dont want it obnoxiously loud. i think ill stick with an intake but i dont want to have to retune it every time i add something new so i think ill wait until i get the intake, downpipe and exhaust before i retune. im assuming adding a new downpipe and exhaust WILL require a retune to peak performance, just as the intake would?
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post #14 of 20 Old 02-26-2011, 02:56 PM
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Pretty much yes. You will absolutely need a tune with the downpipe for both maximizing potential and for safety.

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
Stage 2 2005 WRX
Cobbtuning.com"
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post #15 of 20 Old 03-01-2011, 03:30 PM
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Yeah, my Agency Power inlet (APS knock off) and APS intake make my BPV pretty noticeable in the right situation.

Kirt
378awhp/373wtq Custom Dom 3 & CBRD tuned 2006 STI.
"When in doubt...flat out" - Colin McRae
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