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Thread: 2012 Mustang GT emissions question

  1. #1
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    2012 Mustang GT emissions question

    ive got a 2012 mustang gt with long tube headers and full exhaust trying to get to pass emissions. Catalyst monitor is setting and only code its throwing is system too lean bank 1 and same for bank 2. is it possible to go to engine diag>exhaust>rich/lean DTC and just change the thresholds to get the code to stop? anyone that's had to pass emissions without cats feel free to chime in. thanks

  2. #2
    ive done it

  3. #3
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    Changed the thresholds or just set the codes so the monitor sets but no CEL?

  4. #4
    Quote Originally Posted by Scottyb_288 View Post
    Changed the thresholds or just set the codes so the monitor sets but no CEL?
    the lean codes I have done on some as far as no error reported and gotten the monitors to set, the threshold on other vehicles I have moved around and been able to get the monitors to set. pick you poison

  5. #5
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    Alright. Thanks. Appreciate the input