Question about 2002 Subaru Impreza

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Subaru 2002 wrx bov dump valve

Hi ive fitted the bov dump valve but its not got a loud whoosh sound ,,why is this

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Is it a vent to air or recirculating one. Also it depends on manufacture, some are quieter than others, higher boost pressure will also make it sound louder but other factors are involved with this so I should take advise from your local shop.

Posted on Aug 04, 2008

  • usa19d Mar 23, 2011

    GFB (Go Fast Bits) and Turbo Smart both make a hybrid BOV that uses the stock plumbing and they both sound rather nice



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