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Old 10-30-2000, 10:03 PM   #4
Dynamic Uno
Member#: 1
Join Date: Jun 1999
Chapter/Region: BAIC
Location: Alameda, CA
2011 Impreza WRX STi


Under serrtain circumstances, the BOV might suck in a little if it doesn't close fast enough. That filter would prevent junk from getting into the intake pipes.

Now, I have never seen a single car with a filter on a BOV.
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