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Thread: P1223

  1. #1
    Junior Member
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    Mar 2018
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    Default P1223

    Hey anyone have any suggestions on what might be giving me a P1223 code I

  2. #2
    Member
    Join Date
    Oct 2014
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    82

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    Hi return rate. Bad injectors most likely.
    06 SCLB. Built 48re, ATS Twin cp3, 369sxe, Fass 220, Hamilton 188/220, 110# springs, 100% over's, ARP 625's, Big valve head, .40 over, 12v rods, balanced rotating assembly. etc..
    Tenacity Tuning
    Facbook.com/tenacitytuning
    TenacityTuning.com

  3. #3
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    Mar 2018
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    Default

    Quote Originally Posted by Dom_c13b View Post
    Hi return rate. Bad injectors most likely.
    Hey thanks for the reply, I had one injector go out and I changed it, ran a cylinder % performance test with a snapon diagnostics and everyone is 96 to 107% and the code goes away at 60mph and doesn

  4. #4
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    Mar 2018
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    Default

    I

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