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Thread: Turbo 2005 Silverado Ignition Timing issues

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  1. #1
    Lifetime Member
    Join Date
    Mar 2006

    Default Turbo 2005 Silverado Ignition Timing issues

    This is the first time ive ever seen this and cant figure it out.
    Turbo 383
    60# Deatshwerks

    Im seeing the this PID was pulling timing "EST - Trans Torque Reduction Spark Retard". So i removed all torque reduction i could find in the trans. IT did get better but its still not holding timing like it should.

    Running out of ideas fast on this one.
    Before removing all the torque reduction the timing was going some kinda crazy even out of boost.

    check out around frame 30,000 and it shows Trans Torque reduction spark retard going crazy and then im thinking that is triggering Burst knock timing retard as well.

    Ive used these injectors on several dozen turbo trucks and no issue. Next i think im going to scale the injectors back some to keep me more on the spark table.
    Delivered engine torque is showing 525ftlb at 2500rpms on 10psi and 1.43G/cyl. Boost VE table is at 105% with BEN at 1.01.
    if i could get some timing in it would feel pretty torque
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