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Air Box Hose - 03 1.8t Quattro

Discussion in 'A3/S3 Forum (8L Chassis)' started by L3NGY, Jul 22, 2014.

  1. L3NGY
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    L3NGY Member

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    [Jul 22, 2014]
    Hello All,

    Started getting busy with taking out the airbox and replacing it with a cone and heat shield, so thats one less job before doing the full TIP this weekend.
    When i was taking the airbox out, noticed there is a hose that plugs into the top of the airbox and runs round the front of the engine, obviously it'll plug into the TIP once ive got it on but what is it for?

    Car is a 2003 1.8t Quattro, think the engine is an AUM? But could be wrong.

    Thanks
    #1
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  3. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jul 22, 2014]
    Secondary Air Injection (SAI)... normally top that off with a little air filter when fitting induction kits

    <tuffty/>
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  4. L3NGY
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    L3NGY Member

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    [Jul 22, 2014]
    Appreciate it Tuffty. I don't suppose you would know what size it is so I can get on the hunt for 1?

    Thanks again
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  5. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jul 22, 2014]
    Well its got to fit over the end of the hose so that size :)

    IIRC a 25mm one should squeeze over

    <tuffty/>
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  6. L3NGY
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    L3NGY Member

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    [Jul 22, 2014]

    Perfect, helpful as ever Tuffty.

    Many thanks
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