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Thread: Idle VS in gear AFR and rich on decel

  1. #1
    Tuner in Training
    Join Date
    Mar 2014
    Posts
    14

    Idle VS in gear AFR and rich on decel

    Been trying to dial my truck in for partial throttle and some boost pulls. One thing im fighting is in gear it will idle near perfect 14.7 afr per my aem( 1.00 lambda) however once i put it in park its jumps to about 12.8-13.0
    Per my histogram its not changing cells its 800rpm cell and 30kpa

    2005 silverado 5.3
    2.5 bar map
    Speed density
    60lb 2013 GT500 injectors
    FPR at 58psi

    I cant seem to find any maps that directly shows a compensation for p/n vs gear, only thing i can think of is idle airflow table? Not sure if that would make a difference or not


    2nd issue is im fighting it going really rich on decel , right now i have DFCO turned off as im trying to tune the VE but it seems when i lean out the top cells that show really rich then it becomes lean on cranking, one point it got so lean it almost wouldnt start

    I posted up my map, try to bear with me its my first time tuning with HPT so im still learning, and right now the VE is kinda funky as i was trying a few things someone else mentioned

    Thanks
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