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Hello! Help with this Part #

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San Francisco Bay Area
#6
What does it do?
It pipes engine noise through a tube into the cabin and is a known failure point. It does absolutely nothing in relation to the engine function or emissions, and a lot of people delete/cap off the port or use it for an external BOV, especially when running higher boost or upgraded turbos.

As long as it’s properly capped off and you don’t need to have it to pass an emissions check by a picky inspector, you’re better off without it.
 


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