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Thread: Silverado Low End Power

  1. #1
    Tuner in Training
    Join Date
    May 2011
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    22

    Silverado Low End Power

    Currently tuning a 2008 Silverado 5.3 with the 4l60e and 3.73's, I have removed TM and it is still a dog off the line. Any ideas?2008 Chance Tuned.hptChance Log.hpl

  2. #2
    Advanced Tuner
    Join Date
    Jun 2011
    Location
    Tucson, AZ
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    295
    brake torque limit? pe seems rich at 1.30 for na? only going into pe at 75% throttle?
    2016 Hellcat Challenger, automatic, black on black with brass monkey wheels

    10.13@ 140 DA 5000 feet
    2.75 pulley, tune, drag radials. 10 percent lower od crank pulley, 1050 ix. off road mid pipe. tune

  3. #3
    Advanced Tuner
    Join Date
    Sep 2007
    Posts
    394
    It's because your timing takes a nosedive right when the car launches.

  4. #4
    Advanced Tuner
    Join Date
    Jun 2011
    Location
    Tucson, AZ
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    295
    timing is that of a FI car. even lower.
    2016 Hellcat Challenger, automatic, black on black with brass monkey wheels

    10.13@ 140 DA 5000 feet
    2.75 pulley, tune, drag radials. 10 percent lower od crank pulley, 1050 ix. off road mid pipe. tune

  5. #5
    raise stall torque management

  6. #6
    Tuner
    Join Date
    Dec 2008
    Location
    Houston, Texas
    Posts
    129
    work on your timing and AFR for more low end power.

  7. #7
    Tuner
    Join Date
    Jan 2012
    Location
    Piedmont, OK
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    50
    i agree with ROG2R. get rid of torque management, tune the fuel delivery, and make sure there's no spark knock. i have the same truck and it gets up outta the hole now.

  8. #8
    Tuner
    Join Date
    Nov 2007
    Location
    Frankenmuth, MI
    Posts
    104
    One thing that helped mine was removing the negative timing in low RPM-high flow rates. I have not opened an 08 to see if they still have negatives or not. Just keep an eye out for knock.
    07 Avalanche Exhaust & CAI