Leaking Bov Or Normal Intake Sound?

[rorz]

Hey guys, yes i did do a search but noone seems to have a definate answer as to what is normal and what is leaking noise..

My car when in 3000+ revs or boosting at all has a constant venting noise (like shhhhh) that turns into a CHSSS when i change gear, so i blocked the BOV off with a can and the 'venting' sound went away to some extent (can still hear the shhh intake when boosting but not as loud, and no 'chss' when changing gear obviously).

How do i know if my BOV is leaky or if that's how it's supposed to sound with a pod filter?

My BOV is stock but has a Mitsubishi symbol on it if that makes a difference.

My rb20det is also stock. When i say 3000+ revs i mean my boost guage will be reading -5 (vacuum) but i can still hear a slight venting. This is also when driving at 100 in 5th gear i can hear the venting noise.

Cheers guys.

[TiTAN]

you are more than likely hearing the induction noise a pod filter makes. perfectly normal.

[gwin]

Pretty easy to check, get someone or yourself if you can, to stand infront of the BOV hole and see if the piston vents when revving under boost.

From here you can tell if its the BOV leaking, use a feather or soap around the seals to check further.

[89CAL]

Thats that little hole in your bov that allows it to bypass a little or something stupid like that

If you pull it off and have a look underneath theres a little hole next to the main hole that allows a very small amount of air through. think its supposed to make it less laggy when changing gears but who knows what the go is. My stock bov used to do the same sorta thing, pretty annoying

Otherwise its probably just induction noise

What I was talking about is under lower load not foot to the floor boosting