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.

Im happy with my turbo xs rfl.

is it a deep sound though? not high pitched?

the sound is going to vary a lot depending on how much boost hes running.

I love it when someone points out something obvious that I never considered, makes me realize that I'm truly an idiot :lol:

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)

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.

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)

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.

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

the TURBO XS RFL is nice, a large woosh of air.

Yeah the RFL gives a nice quick whoosh instead of the whistle that comes from the ported style bovs.

Dan

sometimes the sound is muffled by fitting a small air filter used to oil breathers onto the outlet of the BOV.

that butterfly/chopping sound you guys are hearing under low boost is actually compressor surge....that's not a good thing

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

does he realize that he can adjust it? I have a Turbo XS RFL and i love it.....

does he realize that he can adjust it? I have a Turbo XS RFL and i love it.....

not anymore...i'm getting compressor surge and now i have a Tial 50mm

that butterfly/chopping sound you guys are hearing under low boost is actually compressor surge....that's not a good thing

The stock diverter valve on my GTC makes that sound at high or low boost. Some just sound that way, it isn't necessarily compressor surge, and yes I've owned more than one GTC, they all made that sound, and the turbos have lasted plenty long.

The stock diverter valve on my GTC makes that sound at high or low boost. Some just sound that way, it isn't necessarily compressor surge, and yes I've owned more than one GTC, they all made that sound, and the turbos have lasted plenty long.

what he said. If you listen to race cars at a strip, you'll hear a lot of cars do it, and many of them have HUGE BOV's.