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  1. #1
    h2jim's Avatar
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    Running way rich. Why?

    I am running a Riva stage 3 in my GPRRXP and it's rich as hell. Idles in the 10's. I pulled the Riva 50's and put in a set of Accel 48's and it's worse. Changed the plugs too. Why is this happening? I can go to a rrfpr but I thought the stage 3 didn't require fueling adjusting.


  2. #2
    blackvr's Avatar
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    prolly a bad map sensor

  3. #3
    iron head's Avatar
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    how was it up top

  4. #4
    h2jim's Avatar
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    Up top all I could get was 7700 rpm. The o2 sensor shut down.

  5. #5
    h2jim's Avatar
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    If it's a bad map sensor what's the fix?

  6. #6
    blackvr's Avatar
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    Quote Originally Posted by h2jim View Post
    If it's a bad map sensor what's the fix?
    a new one. you have the exact symptoms of one. if you have access to another one, swap em out. youll know if its fixed soon as you start it

  7. #7
    alex29573's Avatar
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    wouldnt it throw a code?

  8. #8
    MSRXP's Avatar
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    Quote Originally Posted by alex29573 View Post
    wouldnt it throw a code?
    Should get a P0106 if values are out of range. A P0107 and P0108 if it is shorted to 12v or Grounded..... On my setup, I got 7700 at wot and the fuel pump was the issue. Just a thought. Good luck.

  9. #9
    iron head's Avatar
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    might be cam timing it may have move. when you retart timing it become rich at idle

  10. #10
    h2jim's Avatar
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    Duke is sending me a new map sensor so I hope that's it.

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