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N75j on my standard car

Ardz83 Jul 18, 2011

  1. Ardz83

    Ardz83 Member

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    Hi guys
    I have heard that a N75J valve may help my performance abit. Will this work on my standard 1.8t 1998 A4?? Or will it just screw with my ecu and go into limp mode?

    Thanks in advance
    Dan
     
  2. Oranoco

    Oranoco Well-Known Member

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    You can save a fortune by nodding the existing N75. Simply remove the valve and turn the screw in the recess 1/4 to 1/2 turn anti-clockwise. Screw is ******* tough to turn though so make sure the screwdriver is a good fit.
     
  3. Ardz83

    Ardz83 Member

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    I just unplugged it and the car runs so much smoother it's unreal. Is that right??
     
  4. aragorn

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    um no.

    With it unplugged you'll only get 4psi of boost.
     
  5. Ardz83

    Ardz83 Member

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    That's all I was getting anyway. Wrong?
     
  6. Oranoco

    Oranoco Well-Known Member

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    You should be getting 7psi on a standard car.
     
  7. Ardz83

    Ardz83 Member

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    No I'm not seeing that. 4-5 psi is all I'm getting. Should I try a new n75?
     
  8. aragorn

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    are there any fault codes?

    Perhaps you've got a boost leak?
     
  9. Ardz83

    Ardz83 Member

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    I'm bidding on a vagcom as we speak. O do have a forge split r valve of that makes a difference?
     
  10. NineNails

    NineNails Proud sponsor of the snack food industry

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    A common problem with the N75 is the wiring that goes to it. It can break internally. It seems not quite long enough to me. This was my problem anyway and I've heard of it happening to others too. Good luck with it
     
  11. aragorn

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    Yeh that happened to the old A4 of ours.
     

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