Whats it...

Discussion in '3 Series' started by zxrichie, Dec 18, 2018.

  1. zxrichie
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    zxrichie

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    is this an exhaust flap? the bit sticking out that is...

    Exhaust thing.jpg
     
  2. snrbrtsn
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    snrbrtsn WARLORD Site Supporter

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    That there thing on the left is the vacuum controlled flap
    Ordinarily a single pipe is used, supposedly to reduce / suppress noise when idling
    When the throttle is depressed a vacuum is built and flap opens

    Many discard as it’s troublesome as fitted in the splash zone & seizes up

    (I believe that’s how it works)
     
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  3. zxrichie
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    zxrichie

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    Cheers, Thanks for that
     

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