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  1. #1
    Senior Member Two Rings Diesel_A4's Avatar
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    Sep 15 2006
    AZ Member #
    11496
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    N/A

    Silly intake question

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    Installing an EVO ms intake on an 01.5 and on my stock airbox there is a hose that runs into the airbox, is this of any use?! I cant figure out if its possibly a smog pump? Where the small air filter would have to go? Or if its just there in case something somehow gets in the airbox its like a run-out for it.

    Thanks

  2. #2
    Account Terminated Four Rings mike-2ptzero's Avatar
    Join Date
    Jul 07 2004
    AZ Member #
    2716
    My Garage
    630AWHP A4, Nissan Titan
    Location
    socal

    It is for the secondary air pump, the kit should come with a filter that goes on that tube.

  3. #3
    Veteran Member Four Rings
    Join Date
    Feb 11 2004
    AZ Member #
    8
    My Garage
    2006 Audi S4 Avant
    Location
    Lowell

    Hook it up or you will start throwing check engine codes.
    ------------ _-~Kirath~-_---------------
    2016 Kia Optima SX-L -
    2006 Audi S4 Avant

  4. #4
    Veteran Member Four Rings 1 ate T's Avatar
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    Sep 15 2006
    AZ Member #
    11334
    My Garage
    VW Jetta GT, 01 Eclipse GS
    Location
    Newark,OH

    Originally posted by Kirath
    Hook it up or you will start throwing check engine codes.
    +1 and you will probably be chugging.
    2000 A4 1.8TQM - Sold

    Will be back in an Audi this summer!

  5. #5
    Senior Member Two Rings Diesel_A4's Avatar
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    Sep 15 2006
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    anybody know what size the small filter is?! I didnt happen to get one so im gonna go to autozone and get any generic small filter.

  6. #6
    Veteran Member Four Rings nizmosx's Avatar
    Join Date
    Feb 13 2004
    AZ Member #
    389
    My Garage
    2007 b7 a4 6MT Ti avant / 2014 Honda Grom / 2012 Tiguan SE
    Location
    Lakewood, CA

    they are all standard size however i dont think any of the filters from autozone are going to have the same diameter hose to connect onto the a4. for some reason autozone carries the smaller diameter hose and the audi filter requires larger. this may have changed.

  7. #7
    Veteran Member Four Rings audisnapr's Avatar
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    Jun 06 2004
    AZ Member #
    2398
    My Garage
    1993 Ford E250 Sportsmobile, 1990 Corrado w/ VR6 swap track car, 2011 Mazda3 S Sport 5dr
    Location
    NJ

    nope niz, you are correct - I have never seen the right size filter from autozone - it's always that tiny little 1/4" opening ones.

  8. #8
    Account Terminated Four Rings mike-2ptzero's Avatar
    Join Date
    Jul 07 2004
    AZ Member #
    2716
    My Garage
    630AWHP A4, Nissan Titan
    Location
    socal

    Originally posted by Diesel_A4
    anybody know what size the small filter is?! I didnt happen to get one so im gonna go to autozone and get any generic small filter.

    Well you could always call up Evolution Motorsports and see if they will sell you the small filter, other wise you could always cover the inlet with a screen since it only sucks in air when the pump comes on and that is usually only during cold idle.

  9. #9
    Veteran Member Four Rings bitterchild's Avatar
    Join Date
    Feb 16 2004
    AZ Member #
    586
    Location
    audi is chit

    Originally posted by audisnapr
    nope niz, you are correct - I have never seen the right size filter from autozone - it's always that tiny little 1/4" opening ones.
    b/c most people use them for valve cover venting
    concours show prep in the DC metro area

    turbos, rods, pistons, clutches, etc.

  10. #10
    Veteran Member Four Rings BranCKY3's Avatar
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    Mar 08 2005
    AZ Member #
    5626
    Location
    Greenville, SC

    I just wrapped one of those in electrical tape and shoved it into the air pump hose, hasn't fallen off yet, it's been almost a year.
    2016 Audi S3

  11. #11
    Veteran Member Four Rings nizmosx's Avatar
    Join Date
    Feb 13 2004
    AZ Member #
    389
    My Garage
    2007 b7 a4 6MT Ti avant / 2014 Honda Grom / 2012 Tiguan SE
    Location
    Lakewood, CA

    ^^^^^ hahaha home depot mods. gota love em.



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