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Thread: idle issues file and log attached

  1. #1
    Tuner in Training
    Join Date
    Mar 2018
    Posts
    22

    idle issues file and log attached

    having an idle issue with 08 vette with ls3, vortech v3, btr3 cam, fore tripple pump, id1050 injectors, headers, e85.

    ive tried big mikes gen v guide as well as playing with base running air flow, timing, fuel, cat lightoff, etc.

    the car drives excellent and lamda is dead on at wot in speed density however on startup whether the car is warm or cold the idle swings pretty badly 400 rpm and it takes over a minute and a half to stabilize somewhat.

    anyone have any guidance off the tune file and log?

    sd14 idle issues.hpl

    SD14 idle timing.hpt

  2. #2
    Advanced Tuner
    Join Date
    Feb 2015
    Location
    Perth, Australia
    Posts
    974
    swinging idle in E38 usually is too rich by 18-20% or more.

    set open loop EQ ratio and IVT gain tables to 1.00 and if need be edit the VE table. its the startup enrichment doing it adding too much fuel.

    also set your idle timing tables back something closer to stock not one number.