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    Thread: Leave this piece hooked up or no? SAI solenoid in relation to ECU chip

    1. Member CorradoFuhrer's Avatar
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      03-29-2012 07:29 PM #1


      plug this in electrically or does it have to be both electrically plugged in and the vac lines, while sai pump and combi are deleted to not affect the ecu?
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    2. Member izzo's Avatar
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      03-29-2012 08:11 PM #2
      You loop the vacuum lines and leave it plugged in the connector to retain fuel trim levels.

      As for the ECU, if this is for your 1997 - it is OBD2 and you will need a chip to eliminate the CEL.

    3. Member CorradoFuhrer's Avatar
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      03-30-2012 05:47 PM #3
      Quote Originally Posted by izzo View Post
      You loop the vacuum lines and leave it plugged in the connector to retain fuel trim levels.

      As for the ECU, if this is for your 1997 - it is OBD2 and you will need a chip to eliminate the CEL.
      Oh ok mines not connected, no wonder it's off. It only seems to effect the car at wot.
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    4. Member CorradoFuhrer's Avatar
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      03-30-2012 05:49 PM #4
      I have a turbo chip but it does not eliminate the sai
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    5. Geriatric Member need_a_VR6's Avatar
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      03-30-2012 11:32 PM #6
      Plug it back in, having it off disables fuel trims.
      -Paul
      1995 GTI VR6 - ??.??@??? 3.6 Power - 12.90@106 R32 power - 12.833@106 12v power
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    6. 03-31-2012 12:27 AM #7
      FYI: looping it does nothing.
      2004 R32 The new daily
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    7. Geriatric Member need_a_VR6's Avatar
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      03-31-2012 09:36 AM #8
      Also true.
      -Paul
      1995 GTI VR6 - ??.??@??? 3.6 Power - 12.90@106 R32 power - 12.833@106 12v power
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    8. Member CorradoFuhrer's Avatar
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      03-31-2012 10:05 AM #9
      Ok cool I'll plug it back in... What to do with the vac lines? Or does that not matter?
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    9. Member CorradoFuhrer's Avatar
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      03-31-2012 10:06 AM #10
      Chip is a non stacked c2 chip that says Atwood 1.33 from 2006.
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    10. Member CorradoFuhrer's Avatar
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      03-31-2012 10:07 AM #11
      Can I trick it with a resistor or something like my air bag light?
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    11. Member CorradoFuhrer's Avatar
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      03-31-2012 11:25 AM #12
      I got it plugged back in, I ripped the wiring so I just guessed on which wire went where on the plug. Now I only have one SAI code instead of two.

      17860 P1452 secondary air injection system: open circuit.

      Am I good now? I noticed different afr's on start up. A bit more rich....
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    12. Member CorradoFuhrer's Avatar
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      03-31-2012 02:16 PM #13
      Thing drives WAYYYYY better now lol
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    13. Member MRosier's Avatar
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      04-01-2012 02:56 PM #14
      Does this matter with the current c2 turbo software? I don't have the solenoid plugged in nor is the relay plugged in over by the battery and no CEL whatsoever.

    14. Member CorradoFuhrer's Avatar
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      04-01-2012 06:38 PM #15
      Quote Originally Posted by MRosier View Post
      Does this matter with the current c2 turbo software? I don't have the solenoid plugged in nor is the relay plugged in over by the battery and no CEL whatsoever.
      The current c2 writes it out if you got the "race" one. Do the vac lines have to go somewhere specific off the solenoid to affect the fuel trims?

      Car feels a lot quicker and wavy better AFR's they are still a tad rich in higher gears going slow, flooring it. This maybe normal though... Say 40 in 5th and floor it I'll see like 10.9 AFR. I need that. Es chip!
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    15. Member CorradoFuhrer's Avatar
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      04-01-2012 11:08 PM #16
      Quote Originally Posted by AlexiGTIVR6 View Post
      FYI: looping it does nothing.
      So loop it? Don't loop it? Does it matter?
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