Blow off valve sound out of no where

[jcr557]

So on my way home from work today I'm listening to the radio with the windows down and I thought I heard a BOV near me. I turned my radio down and didn't see any cars around me. As I accelerate and go through gears I notice it's my car. Now I haven't done any engine mods and I've never heard this before but it sounds like I have a blow off valve lol. Sounds cool. I recorded it and put it on my instagram @jcr57rt but you can't really hear it.

I haven't heard it before, does anyone hear the whistling sound in their cars?

For those of you that are not sure what I'm talking about, this is the sound.

http://www.youtube.com/watch?v=fNeX1Az6Kus

 

[Colin1337]

That's weird, mine doesn't sound like that. Mine is more drawn out and more "airy" sounding

 

[Colin1337]

Granted mine is modified. I'd say something came loose ?

 

[Sekred]

Granted mine is modified. I'd say something came loose ?

Yea, sounds like a hose is loose

 

[RyGuyFIST83]

Why is everyone talking in another language in the you tube comments,at first I thought you were from another country and by your Fiesta ST 180 post. Def sounds way different than mine,if you never heard it before,go get it checked out.

-ry

 

[jcr557]

That's just a video I found on YouTube to show the sound.

 

[RyGuyFIST83]

That's just a video I found on YouTube to show the sound.

Oh ok,did ya figure out what was causing the bov sound?

-ry

 

[SoCalST]

Hmmmm I can hear my BOV with windows down but it's faint, not loud like this. BTW I have a Cobb Filter and AP

 

[JP6spd]

It's normal. You can hear faint turbo noise with the windows down.

 

[stuntdoogie]

Wow thats loud. But sounds cool. Congrats You just saved over $250 and a tube that makes hot noise....

 

[Shmi]

Mine also sounds like this. No loose hoses or anything (I check every time I do an oil change) and I hold boost just fine.

 

[Btlscrz]

Okay guys, i was going to post a thread about an idea, but this thread kinda is my idea... if i'm not mistaken the line that releases turbo pressure when you lift off the throttle ties into the intake ducting just after the MAF.... SO, if you want more of a BOV sound, but not that hideously annoying super loud kind you get with the boomba, couldn't you take that line, re route it into the BOTTOM section of the air box and kind of get the same effect? especially if you're like me and drilled a 2" hole in the bottom of your factory box because you're too cheap to buy a Mountune box?? (and honestly, i don't think the Mountune box works $300 worth of better than a factory modded box.) of course you'd have to cap off where it goes into the intake so you don't pull dirty air into your intake tract. i'm a mechanic, and i can't think of any reason why this wouldn't work. seems to me that line doesn't PULL air, only releases it, so under the air filter should be fine, so long as you place it where it doesn't blow a damn hole in the filter..?? will search some more..