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Old 10-24-2004, 07:48 PM   #1
IMPRZME
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Default @ what RPM can you hear BOV???

ok I know the title is vague...but here's my situation... I just bought a 02 WRX, all stock except for a GFB BOV. I'm not sure which exact GFB BOV it is... but, I'm curious to see, on a stock WRX, what RPMs do you usually hear the BOV? I have to be at LEAST over 4k to even hear it make noticable noise... is this normal? I dont currently have a boost guage so dont know how mush psi there is around 4k rpm... I probably sound like an idiot and it would make things a little clearer if I could tell how high the boost was at certain rpm and all but any info would be apprectiated. I had a 01 2.5 RS before and never owned a turbo car, so new to the whole turbo scene. Thanks!!!

oh yeah...and also, I dont see anything on the BOV to adjust between recirc or atmospheric, so I looked at GFB's website and I think I have the WRX Hybrid w/ blanking cap..??

maybe I'll go take a picture and see what you guys think...
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Old 10-24-2004, 07:51 PM   #2
Gfunk720
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Intake silencer removed, with stereo off and such I can hear the BPV start making noise around 2300-2500 rpms...

Maybe it is set incorrectly? Either way it is crap, and u should ditch it. Notorious for leaking boost, even at moderate levels
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Old 10-24-2004, 07:54 PM   #3
IMPRZME
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hmm... maybe I'll just have to save up and get a new one... any suggestions?
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Old 10-24-2004, 08:07 PM   #4
Gfunk720
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Your WRX is stock, I say put back on the factory BPV. Other than that, the only BOV that I have seen that I would consider buying is the WORX Tuning Dual Stage BOV. Although it is fairly useless, other than making a cool sound....

I say sell it and buy some real performance parts.
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Old 10-24-2004, 08:08 PM   #5
Lagwagon
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Can the BOV be adjusted? You may also want to take some tension off the spring. I would not recomend buying a new one other then going back to stock.
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Old 10-24-2004, 09:45 PM   #6
theBob
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Buy a stock By-pass valve !!!!
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Old 10-24-2004, 11:17 PM   #7
NM02WRX
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Quote:
Originally Posted by Lagwagon
Can the BOV be adjusted? You may also want to take some tension off the spring. I would not recomend buying a new one other then going back to stock.
worx BOV is tunable to different psi's..

very good valve tho..
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Old 10-24-2004, 11:35 PM   #8
feiron
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GFB BOV sound depends on how long you stayed boosted.... if you're stock 4K is decent...
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Old 10-24-2004, 11:41 PM   #9
distorto
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with the stock intake, the worx is quiet...
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Old 10-25-2004, 01:10 AM   #10
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I like my GFB set at 50/50. holds boost fine to 16.x Psi (COBB Stage 2) and makes a clean whoosh sound like running over a puddle of water.
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Old 10-25-2004, 02:35 PM   #11
theBob
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gut your up pipe, or get a catless one. Otherwise you risk damaging the turbo when that cat lets go.
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Old 10-25-2004, 04:59 PM   #12
kharris4
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form follows function. you should make your car powerful enough to need a stronger b.o.v.
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Old 10-25-2004, 07:47 PM   #13
AdamRX
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what about the forge BOV
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Old 10-26-2004, 02:36 PM   #14
jared nelson
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i had a GFB 50/50 and i have run it 5050 and 100 atmo, and it ran better after shifts, meaning it hit the next gear harder, one 5050, but then when i sold it and went with a stock one again, it shifted much better, because the AFRs were not going all out of wack when i shifted. id say stay with stock. then if you really really want to year that noise, then get rid of the resinator and ugrade to like a shortram intake or something like that, then youll be able to hear the stock bypasser still, and retain that good feel when you shift. i know it sounds wierd, but my car shifted better without that damn thing. i probly could have cut a 10th off my 1/4 i swear the difference was huge...
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Old 10-26-2004, 03:20 PM   #15
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2.5k, im taking mine off, im getting horrible gas mileage
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Old 10-27-2004, 11:38 AM   #16
StealthfishWRX
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its doesn't matter about what rpm, i did over.1mpa in my rex in 1st gear, so all that said about only getting 6 psi in 1st is out, and as long as you get some psi even under 0 mark it will still make a noise. I would know bc i hear it and i only took of the silencer and i still here it, if you had the BOV, it would be loud.......
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