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Whats this bit on the airbox?

Discussion in 'A3/S3 Forum (8L Chassis)' started by Grae W, Mar 14, 2013.

  1. Grae W
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    Grae W New Member

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    [Mar 14, 2013]
    Audi 1.8 T Sport 2001

    Only had it a few days, and just taking a closer examination under the bonnet. The previous owner has taped up something on the corner of the airbox - any idea what it is and why he might have done it please?

    [​IMG]
    Last edited: Mar 14, 2013
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  3. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Mar 14, 2013]
    Secondary Air Injection feed... guessing your SAI has been removed...

    <tuffty/>
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  4. Grae W
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    Grae W New Member

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    [Mar 14, 2013]
    Ok thanks. Could explain why it failed on emissions on its last MOT before passing?
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  5. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Mar 14, 2013]
    I doubt it, SAI is used for emissions on coldstart really...

    MOT tests are done on warm engines... if the cats weren't up to temp then it would most likely fail initially...

    <tuffty/>
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  6. Grae W
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    Grae W New Member

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    [Mar 14, 2013]
    Ok, thanks for the advice!
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  7. blackshuck
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    [Mar 14, 2013]
    OK, what's an SAI?
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  8. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Mar 14, 2013]
    #7
  9. blackshuck
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    [Mar 14, 2013]
    Oh that SAI!.....lol







    Thnx
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  10. blackshuck
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    [Mar 14, 2013]
    I have a Neuspeed induction kit (pictured) and you can see a smaller filter to the bottom left is that for the SAI?
    It's currently disconnected, should it be connected?
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  11. blackshuck
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    blackshuck Member

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    [Mar 14, 2013]
    Ok not pictured it won't upload
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  12. blackshuck
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    [Mar 14, 2013]
    image.jpg Here you go!
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  13. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Mar 14, 2013]
    The SAI draws filtered air from the airbox... the neuspeed heat shield has a place to connect SAI when you replace the std air box and supplies a filter (the little one) to retain functionality... if you have still got SAI then it should be connected...

    <tuffty/>
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  14. blackshuck
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    [Mar 14, 2013]
    How do I know if I have one? I will have a search for pics & location, thanks
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  15. blackshuck
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    [Mar 14, 2013]
    By the way what is the advantage of removing it?
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  16. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Mar 14, 2013]
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  17. blackshuck
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    [Mar 14, 2013]
    Thanks Tuffty!
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