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Forced Induction Discuss topics relating to turbochargers, superchargers, and nitrous oxide systems.
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Old 02-14-2006, 08:20 PM
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Blow-off Valve
So my buddy Jack bought a GReddy Type-S bov and he isn't happy with the high pitch sound. Anyone know of a bov that has a low pitch? I mean the loudness isn't a problem, it's just the actual high sound. If it were loud and dampened... like a deep release of air... I'm finding it difficult to explain the sound he's looking for and the sound that he has.

Basically does anyone know of a bov that has a loud but low sound? Not a high pitch sound?


God I'm so confusing.
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Old 02-14-2006, 08:45 PM
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Re: Blow-off Valve
Im happy with my turbo xs rfl.
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Old 02-14-2006, 10:29 PM
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Re: Blow-off Valve
is it a deep sound though? not high pitched?
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Old 02-14-2006, 10:34 PM
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Re: Blow-off Valve
the sound is going to vary a lot depending on how much boost hes running.
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Old 02-14-2006, 10:48 PM
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Re: Blow-off Valve
I love it when someone points out something obvious that I never considered, makes me realize that I'm truly an idiot
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Old 02-15-2006, 04:08 AM
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Re: Blow-off Valve
the apex-i twin chamber sounds like a loud compressed air can. Not a high pitch thing. Also makes a cool butterfly noise under lower boost *8 and under*

Listen to mine in the video we made under racing o/t (the relic movie)
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Old 02-15-2006, 03:01 PM
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Re: Blow-off Valve
Is it possible to pipe it away to a remote location? Where does it blow off to? the atmosphere? possible way to muffle it somehow.
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Old 02-15-2006, 05:24 PM
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Re: Blow-off Valve
Quote:
Originally Posted by 534BC
Is it possible to pipe it away to a remote location? Where does it blow off to? the atmosphere? possible way to muffle it somehow.
well, not sure if you could, but i would just put it on the i/c piping. some bovs vent into the atmosphere while others just recirculate it into the intake pipe (before the compressor)
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Old 03-17-2006, 12:30 PM
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Re: Blow-off Valve
put a turkey call over it, or a whoopie coushion, or any other air-driven toy. you and everyone around you will have an instant party.
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Old 04-12-2006, 07:48 PM
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Re: Blow-off Valve
i love the sound of my greddy rs it also has the butterfly sound at low boost. but now sadly i needed to recirc it so i cant hear it to well
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Old 04-16-2006, 04:19 AM
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Re: Blow-off Valve
the TURBO XS RFL is nice, a large woosh of air.
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Old 05-16-2006, 08:10 PM
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Re: Blow-off Valve
Yeah the RFL gives a nice quick whoosh instead of the whistle that comes from the ported style bovs.

Dan
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Old 05-17-2006, 05:35 PM
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Re: Blow-off Valve
sometimes the sound is muffled by fitting a small air filter used to oil breathers onto the outlet of the BOV.
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Old 05-21-2006, 10:42 AM
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Re: Blow-off Valve
that butterfly/chopping sound you guys are hearing under low boost is actually compressor surge....that's not a good thing
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Old 05-21-2006, 11:42 AM
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Re: Blow-off Valve
Quote:
Originally Posted by Skyline_R32_Canada
that butterfly/chopping sound you guys are hearing under low boost is actually compressor surge....that's not a good thing
im pretty sure that there are specific blow off vavles that are suposed to make that sound but dont quote me on it
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