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Thread: Idle Surge After Injector Scale

  1. #1
    Tuner in Training
    Join Date
    Jun 2021
    Posts
    23

    Idle Surge After Injector Scale

    2007 Base Vette
    BTR Stage 4
    FTI 3600 Stall
    ECS Novi 1500
    2 Bar OS SD w/ 3 bar sensor
    FIC 72lb Injectors
    Long tubes

    Car idled great before I scaled the tune to deal with the 1.32g/s ceiling. It would oscillate big time in P/N. It would idle the same in drive. I setup a separate file with bigmikes idle parameters, but the rest is my tune.

    I can get it to idle in P/N at pretty much any degree of timing. I've tried 16-25 and it doesn't seem to care. 14g/s and it's happy. As soon as I put it in drive it bogs, oscillates, then eventually dies. So now I have the reverse of the original problem. Less air it dies immediately, more air still oscillates. I haven't played with any torque values yet. Wanting to get a second opinion.

    UPDATE:

    I added Engine Torque to the scanner and adjusted the Idle Torque table and I was able to adjust idle without surging. Car runs great. Ended up taking more air out than expected.
    Last edited by Ancient8989; 04-15-2022 at 10:13 PM. Reason: Injectors