hey
wanna know which BOV those japan cars use for e.g mines skyline, the skyline from 2 f2furious

its a fluttering sound?
really digg those!

 

That fluttering sound isnt just the BOV, check this thread out...great read.

http://www.club240.com/forums/showth...&highlight=BOV

 

I just recently recirculated my HKS SSQV and now it makes a sound that sounds like a very, very muffled compressor surge. A flutter I guess. The only thing I can think of is when the air is recirculated into the intake pipe there is some turbulence between the already compressed air and the air being compressed.

 

Does the SSQV still make the chirp sound recirculated? Did you have problems with stalling from it not being recirculated?

 

greddy type s has a good fluttering, tapering, computer like sound if the valve is kinda loose. I have a friend who has one on a redtop and it sounds real nice

 

the fluttering might be an apexi dual chamber

 

I heard that electronic turkey/fluttering sound is bad. (is it?) its a shame if it is cause it sounds hot- ie. green eclipse in F&F I

 

sorta, its compressor surge, and "could potentially harm your engine" but there have been people running with compressor surge for years, and their turbos are still kickin it, so its not really a big issue, it just despools the turbo. adding a BOV that works will keep your turbo spooled, and compressor surge will stop the wheel from spinning.

 

HKS SSQ sounds like a turkey,but thats just how it is.
and doesnt the eclipse in F&F sound like a greddy?

 

any body ever heard of a meganracing bov?
sound nice too me
example
http://www.meganracing.com/products/...asp?prodid=161

 

Greddy's just don't commonly make a fluttering sound because of the nature of the valve...greddys flutter when they're improperly adjusted and aren't doing their job.

I had my type-s adjusted almost full-hard for a while and got that fluttery echo...finally took it off and hooked it up to a vacuum hand pump, went to 20 psi vacuum and realized that the thing WAS NOT opening...adjusted it right, and now it makes a high pitched single whistle/exhale sound. THAT is a greddy blowoff valve sound...any fluttering, that's air bouncing around between your throttle plate and turbo blades

 

I really dont see the point of upgrading a bov on a stock turbo unless you really crank the boost. I just think that if the stock one can't do its job nissan wouldnt of used it. As for a good valve does anyone on here use forged motorsports bov. I know of a wrx using one and read about how reliable they are, how little they leak, and how they arnt too loud.