well when im in full boost 14psi. its hard to hear the bov over everything else. but ya when im driving around town at about 1-8 psi. it has a wooshing fluttering sound.

 

i love that bov duck call!

 

the hks one makes more of a fluttering sound, but on cars running a ton of boost they often get the fluttering sound anyway because so much air is coming out of the bov when the throttle closes

 

My friend has a Vortech (I think) and it flutters and sounds like a rattlesnake

 

I used to use a blitz ss and during quick shifts at 20psi it it gives off a double sound .
now I use the greddy type rs knockoff its just straight blow off but not as loud as the blitz.

 

does anyone has a sound clip a good one

of the Blitz DD bov ?

 

D1 cars dont have bovs, oridos supra... no bov on my car for 2 years, until 88 there were no blowoff valves on turbo cars... blowoffs are to maintain the turbos velocity more than to protect things. plus they sound fun. without a blowoff my car sounds like a turkey gobble... ganted - it cant be "good" for the turbo - but even the best bov ever theres still some reversion. im running 22psi on a H1c with a tial now, and that things huuuuge and i still get a little surgy fun time

 

Wastegates. I just found it

http://www.youtube.com/watch?v=PB0QSifwoU8

 

is that really the WG ?

how can a WG sound when u lift of the gas pedal ... at that moment it should be close

if it is a BOV it sounds good ..

 

Turbonetics raptor, Its an adjustable bov, you can adjust it to make that low quiet flutter, almost sounds like a rattle snake. But it only dose it when you are pushing around 2-5 psi, more than that and it makes the normal pssssshhhhhh sound. Or you can adjust it to sound like that all the time. My brother in-law has one on his srt-4 It sounds nice but I know its spendy.....