azndisgrace

the bov on my car has been altered by removing the hose and caping the air box..

good turbos on a completly stock car should be 10-8-10 so when the car goes from 10 psi to 8 psi should i hear the bov go off?? if so what rpm would it be at cause i'm not hearing anything

Mahjik

iTrader: (1)

You should hear the BOV when you are on boost and you let OFF the accelerator. That's the time the BOV needs to vent the excess boost.

You'll usually hear it as you shift gears when you getting on it. You won't hear it while you are still pressing the gas pedal.

azndisgrace

so when i floor it, i shouldnt hear it in between the 10-8-10.. whew.. i need to hook up my boost gauge asap

Mahjik

iTrader: (1)

Nope! That would mean all your boost is leaking out!

jspecracer7

Can you hear the BOV when you let off the gas at moderate boost?

Mahjik

iTrader: (1)

I have the Apexi and I can hear it under moderate boost. Anything less I don't know if it's enough to open up the BOV.

azndisgrace

yeah i can hear the bov any time i let my foot off the gas at about 2500 rpms +

if its really light acceleration or if i'm just cruising i can hear a hissing noise sometimes if i'm at like 3k rpms.. is that normal?

Mahjik

iTrader: (1)

I don't know with the stock BOV (I never vented the stock one), but not with the Apexi that I used.

Apparently, from some older threads, the BOV lets out more air than aftermarket ones because of the valve spring tension (it's a little less). So, what you are probably hearing is normal for venting the stock BOV.