Yesterday I was doing one of those "Boring Day / PT Research Day"
I decided to hear the BOV with the hood open.[}
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I revved up the engine at the throttle body, by hand and let go to hear the BOV.[8D]
I heard and felt the air coming out of the BOV. What got me to think is that the BOV exhaust ports points toward the Air intake area.
I have the factory airbox.
I placed the hand behind the airbox and tested again. My gut feelings became real, the BOV vents directly to the airbox and it vents hot air!!! With the silencer in place the air won't get inside the engine.
But...
If you have a cone type Air filter with no shield, that hot air will be sucked back to the intake making the I/C work harder and IMHO, making the upgrade useless. The compressor would keep spining freely but you will be re-heating the air that went already thru the turbo.
Test it in your cars and post your observations.
Just some food for thought.
Disclamer: Not a Profesional test, Just an observation that will be validated or denied by all of you.[:X]
Let the posting begin...[?]
Ian