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Blow Off Valve

Discussion in 'A3/S3/Sportback (8P Chassis)' started by GlasgowRangers, Oct 6, 2008.

  1. GlasgowRangers
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    GlasgowRangers GlasgowRangersFC

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    [Oct 6, 2008]
    Can somebody please explain to me what the hell a blow off valve is and what the benefits are of having one? PLEASE...
    #1
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  3. PW-Motorsport
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    PW-Motorsport Member

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    [Oct 6, 2008]
    A Diverter valve is fitted to the current VW/Audi turbo engines.
    When you close the throttle the boost is returned to the vacuum side of the turbo, keeping it spinning.

    A blow off valve or dump valve will vent this boost to atmosphere, creating a whoosh noise on gear change. These do not work very well on the current VW/Audi turbo engines
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  4. golf
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    golf ***** rent boy VCDS Map User

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    [Oct 6, 2008]
    Are they blocking Google in Turkey now? :moa:
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