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Thread: 2011 sierra 6.0 Tuning fuel help??

  1. #1
    Tuner in Training
    Join Date
    Jan 2009
    Posts
    31

    2011 sierra 6.0 Tuning fuel help??

    ok guys i need help. We have a 2011 sierra 2500hd 6.0 a6 with a whipple charger and headers. I cannot figure out the fuel stretegy on this e78 controller. If you look at the log file...watch the wot pull at 40seconfs into the log. a/f is good until about 4800rpm. Up until this point commanded a/f is 11.7 and then it leaans out to a commanded a/f of 14.6. wtf what is causing this? I need some direction on the fuel strategy on this over complicated unit haha. Thanks
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  2. #2
    Senior Tuner Russ K's Avatar
    Join Date
    Dec 2005
    Location
    Regina, Sask.
    Posts
    4,213
    First set your power enrichment enable torque to 0 at all RPM's. If still no PE, then 0 the RPM Limit Accel Thresh vs Accel table. Also max out the Piston Protection enable RPM as it can add unwanted fuel .

    Russ Kemp