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Thread: Low throttle position high kpa

  1. #1
    Tuner in Training
    Join Date
    Apr 2020
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    13

    Low throttle position high kpa

    I have a 06 silverado and i have a couple questions... when accelerating after the gear change to second, the truck reads normal throttle position but the map reads almost wide open... under 50% tps itll read 90 kpa. Any idea why?
    Second gear in these trucks is gutless for a few seconds and i know a big part of that is the gearing in the 4l60 as well as the converter. But i want to see if it'll carry the power a little better. Also the truck is stuck on desired pedal area alternate so it always has a low throttle position yet at medium throttle it reads 90 kpa... map per the editor swings only up to 93 kpa i believe at wot.

  2. #2
    Senior Tuner
    Join Date
    Jun 2004
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    405
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    2,326
    Is it 2WD? 3.23 gears i bet. Those tend to lug it around if it's upshifting early at low throttle.

  3. #3
    Tuner in Training
    Join Date
    Apr 2020
    Posts
    13
    Negative ghost rider... 4wd with 4.10s