SCT X3 Tuner - Rejected Smog

Discussion in 'Ford Raptor Problems and Questions Forum' started by Pynenut, Jul 24, 2014.

  1. Pynenut

    Pynenut Full Access Member

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    Just took my Raptor in to get a Smog check here in Nevada and received a "Rejected Smog" result. Looks like it failed on the OBD Catalyst, Oxygen Sensor.

    The tech asked if I had disconnected the battery. I had not but did install the 93 tune although it has been a few weeks. He told me to return it to stock and run it for 50 miles and bring it back.

    Just wondering if anyone else here had a similar issue? Was it due to the tune? Did returning it back to stock allow it to pass?
     
  2. Westside Offroad Group

    Westside Offroad Group Supporting Vendor Supporting Vendor

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    could be an oxygen sensor
     
  3. NickPic83

    NickPic83 FRF Addict

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    its possible all your sensors havent had enough time and cycles to "ready". everytime u flash/tune your truck all sensors reset and need miles and cycles to "ready"

    how many miles have u put on it since the last time u flashed it?
     
  4. Pynenut

    Pynenut Full Access Member

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    Couldn't say for sure but it was about a month ago, so probably at least 500 miles which seems like it's enough for a cycle.

    The only other thing I can think of is I put on a MBRP turndown and removed it in 2 days. So it was on, then off, not sure if this would affect it.

    I just returned it to stock tune and plan on putting 50-60 miles on it and bring it back for a retest.
     
  5. TheJoker

    TheJoker FRF Addict

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    This happened to me. I was running a 5 Star tune and most sensor came back as "not ready", REJECTED. I returned it to stock, drove her 100 miles, and everything checked out fine.
     
  6. Pynenut

    Pynenut Full Access Member

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    Thanks good to hear! Hopefully everything will check out. This gives me a reason for a trip up the mountain tomorrow!


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  7. TheJoker

    TheJoker FRF Addict

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    This is from my failed inspection:
     

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  8. Pynenut

    Pynenut Full Access Member

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    [​IMG]

    Here are my results. We'll know for sure if the culprit is the tune or not soon enough.


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  9. SilentShooter

    SilentShooter FRF Addict

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    Pretty sure the tune turns off monitoring of the rear as a default so they don't have to deal with it on LT and off road pipe trucks. Will cause it to fail every time. Just run stock for a while and retest and you will be fine
     
  10. Pynenut

    Pynenut Full Access Member

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    That was it! Never been so happy to pay $714 for registration before.


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