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Super Modulator
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19,549 Posts
i have heard about this. Would be interested to see some real world data if available? I haven't been able to find anything.
I'll save you the hassle -- it's basic physics.

The "sound" you hear is the compressor wheel stalling on throttle-off as the rotational momentum of the wheel tries to compress intake charge against a closed throttle plate. Normally the wheel's rotational momentum would bleed away over time. Without a BPV, the compressed charge has nowhere to go except back to the compressor wheel (an acoustic pressure spike) that stalls the wheel. When the throttle plate is opened, the compressor now needs to spin up in order to provide useable boost.

I am constantly amazed the number of people who destroy proper engineering in order to peacock to their peers. It makes me physically sick. It's no wonder I despise millennial car "enthusiasts."
 

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Super Moderator (Actually a SuperSpy)
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28,397 Posts
I am constantly amazed the number of people who destroy proper engineering in order to peacock to their peers.
What do they call a peacock's testicles?
....
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His peanuts.
Thank you! Thank you very much! Good night, everybody!
 

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Super Modulator
Joined
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19,549 Posts
What do they call a peacock's testicles?
....
...
His peanuts.
Thank you! Thank you very much! Good night, everybody!
I should have read this a couple hours from now... when I'm drunk
 
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