My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

I bought a Typhon BOV on ebay. Polished aluminoum with 6 blow holes & it has a flat nut shaped top that tightens with a barb on top for a hose. Could the BOV be too loose?
I haven't had too much time to mess with it. Anyone seen this kind of BOV? thanks in advance.

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

Sounds more like it's too stiff.

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

those small blasts sound like compressor surge

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

yup

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

Can u go into more detail as when this problem is happening? Are you experiencing it only when vac pressure is changed (from u taking your foot off the acceleration pedal)? What RPMs and such?

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

It happens when I take my foot off the gas when I shift gears. Whenever the BOV lets out air it happens.

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

What's compressor surge? Take a look at my post above. Thanks.

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

and if that doesn't do it for you, how about this:

http://www.google.com/search?hl=en&i...mpressor+surge

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

Sounds like compressor surge.
My bov gives aaa nice wooooshhh with e high pitched sound a the end...weird but cool

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

hmmm actually sounds like the bov's in NFS Underground....I'm rice :'(

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

Do all BOV give out one blast or are there some that give out 3-4 blast? My BOV has a flat top with a barb for the hose that can be tightened or loosened. Inside it has a piston that moves up toward the cap with the hose on it, and it has 6 holes on the bottom for the exits. It has a spring inside pushing the piston down. I cut out a wind on the spring and have the BOV set as loose as possible without leaking pressure. Are all BOVs supposed to just give one blast or is mine a real shitty BOV. ??? thanks in advance.

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

Mine lets out a loud "running over a bird" screech, then a light flutter. It's an HKS SSQV though, and that's how it's designed to work. I would try finding someone else with the same BOV as you and ask them?

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

i have that cheap ebay bov and i cut 2 coils out of the spring and it sounds really nice, doesnt flutter at all. im running 10-12 psi and even at 1 or 2 psi it is loud and sounds really clean

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

thatnks got boost & everyone else. I'm gonna try cutting off another coil to see if it helps. ;D

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

you guys just love the blow off :)

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

i dont know why i like the fluttering sound i wish mine did that

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

Take off your BOV then :-X

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

No more flutering sound. I cut off 2 coils on the spring & barely tightened the BOV. Problem solved ;D

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

did yours come with a little screw on whistle horn? mine did and when i would let off throttle before spool it sounded exactly like an old man snoring.

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

no little screw, just a bolt shapped cap that tightens with the hose fitting on top.

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

not true, fluttering isn't necessarily comp surge, my bov flutters, that's just the sound it makes, i know it's not comp surge. i actually like the low flutter, imo it's better than some ricey ear piercing whistle.

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

fluttering can be compressor surge and/or too stiff a spring tension, which is why when they cut the two coils it solved the problem.

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

no the fluttering is compressor surge, not the bov. a lot of people make this mistake because it sounds almost identical. only one is ccchhhh and the other is chh chh chh. haha

Re:My BOV gives off 4-5 blasts instead of just one big blast. Why?
 

yup....if it sounds like this a bunch of tinny blow offs one after the other, it is your turbo surging out the pressure. maybe your BOV is too tight, OR not working.