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Thread: DV vac line?

  1. #1
    Registered Member Two Rings
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    DV vac line?

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    I tore the vac line that's right off the DV. You know, the thin threaded one that runs back up to the engine; not the connection to the turbo outlet hose. I'm just wondering if anybody knows where this vac line goes, or if there's someone on here who has diagrams of where each vac line goes on the 1.8T ATW engine

    Actually, on second thought, I think it's the one that runs back up to the turbo inlet hose. Anybody have a diagram for it, so I know exactly which twists and turns I need to take to reach my destination, when I put a new vac line in? Word on the street is that this particular one is a bitch to get back in
    2000 A4 1.8TQ Tip

  2. #2
    Veteran Member Three Rings Brooksthepro's Avatar
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    Re: DV vac line?

    pretty sure thats the one wraps around the engine to under the intake manifold......but i could be thinking of a different one..........i would emagine that one would be a pretty big PITA


    edit: quick search turned up this:

    Last edited by Brooksthepro; 03-13-2008 at 01:50 PM.
    GIAC FXK04/Gen380cc/TTMAF/FMIC/custom magnaflow/710n/Labree HFC/034 Highflow Exhaust Mani/17"Team Dynamics ProRace1/CAI/race springs/Rs4 Grille/VDO vent boost gauge/SS brake lines/x-drilled rotors/12in Infinity /600w Infinity amp

    SANTA BARBARA LOCALS!! SBEUROCLUB

  3. #3
    Veteran Member Four Rings audisnapr's Avatar
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    Re: DV vac line?

    correct, it goes to the underside of the intake mani

  4. #4
    Veteran Member Four Rings audisnapr's Avatar
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    Re: DV vac line?


  5. #5
    Senior Member Two Rings
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    Re: DV vac line?

    You should get rid of the N249 valve that controls the dv and connect it directly to the intake manifold.

  6. #6
    Registered Member Two Rings
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    Re: DV vac line?

    Quote Originally Posted by dab_master View Post
    You should get rid of the N249 valve that controls the dv and connect it directly to the intake manifold.

    Interesting. Is there a DIY around here somewhere for that? I thought it was the N75 that controlled how much boost the DV held...
    2000 A4 1.8TQ Tip

  7. #7
    Veteran Member Four Rings audisnapr's Avatar
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    Re: DV vac line?

    n75 controls the wastegate actuator - #22 connected to #21

  8. #8
    Veteran Member Three Rings Brooksthepro's Avatar
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    Re: DV vac line?

    n75 controls the wastegate i think

    edit:
    damn it snapr, u beat me! lol
    GIAC FXK04/Gen380cc/TTMAF/FMIC/custom magnaflow/710n/Labree HFC/034 Highflow Exhaust Mani/17"Team Dynamics ProRace1/CAI/race springs/Rs4 Grille/VDO vent boost gauge/SS brake lines/x-drilled rotors/12in Infinity /600w Infinity amp

    SANTA BARBARA LOCALS!! SBEUROCLUB

  9. #9
    Registered Member Two Rings
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    Re: DV vac line?

    Oh, gotcha. How would I go about bypassing the n249; refitting the DV bung onto the intake manifold in place of the current one there?
    2000 A4 1.8TQ Tip

  10. #10
    Veteran Member Three Rings Brooksthepro's Avatar
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    Re: DV vac line?

    Quote Originally Posted by Leifer View Post
    Oh, gotcha. How would I go about bypassing the n249; refitting the DV bung onto the intake manifold in place of the current one there?
    you would plug it in directly on the nipple on the front of the intake manifold.

    but what would this accomplish?
    GIAC FXK04/Gen380cc/TTMAF/FMIC/custom magnaflow/710n/Labree HFC/034 Highflow Exhaust Mani/17"Team Dynamics ProRace1/CAI/race springs/Rs4 Grille/VDO vent boost gauge/SS brake lines/x-drilled rotors/12in Infinity /600w Infinity amp

    SANTA BARBARA LOCALS!! SBEUROCLUB

  11. #11
    Registered Member Two Rings
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    seattle, wa

    Re: DV vac line?

    It would feed the DV line straight into the intake manifold, thus bypassing the need for the n249?

    Sorry, I have no idea beyond that.
    2000 A4 1.8TQ Tip

  12. #12
    Senior Member Two Rings
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    Dec 01 2006
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    Santa Cruz, CA

    Re: DV vac line?

    if you do that, you need to put a resistor in the N249 plug to make the ecu think it's still there or you will get a cel

  13. #13
    Registered Member Two Rings
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    Location
    seattle, wa

    Re: DV vac line?

    It's really that simple? Damn, I might have to do that.
    2000 A4 1.8TQ Tip



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