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Thread: lq4 ported heads and cam

  1. 06-19-2018 #1
    eastdoug4racing
    eastdoug4racing is offline
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    lq4 ported heads and cam

    i got my engine wired stand alone 6.0 lq4 4l80e with ported 317 heads and 225 int 236 ex on a 110 cam and it will start and dies or if i bring tps up to 20% it will idle around 800
    - 900 rpm i have changed my target idle speed to 925 from 154 degrees to 284 and from 68 to 133 degrees i have it set at 950 rpm then i changed my base running airflow to 16.75g/s in drive and 15.75 g/s in p/n when over 154 degrees and it will idle around 1000 rpm so should i keep tuning on base air flow down or up and or raise the target idle or should i do something else?
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  2. 06-19-2018 #2
    5FDP
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    Post the tune and logs.


    What else is done, like injectors, speed density or are you running a MAF still?
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.
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