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Thread: Drive to park surge

  1. 05-13-2018 #1
    SpudzysSpeedShop
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    Drive to park surge

    Working on a btr stage 4 cammed 04 silverado, Ve and MAF are tuned, going from park to drive it'll surge up a few hundred rpm and fall back to idle eould this be an IAC delay setting? been datalogging and adjusting base running airflow with minimal results. Heres some datalogs and the tune.joe idle surge park-drive.hplJOE MAC MODDED CURrr.hpt
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  2. 05-13-2018 #2
    SpudzysSpeedShop
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    Going through the datalog and and noticed the iac position is 310 consistantly but desired hops from 150-190, how do you go about opening the throttle blade on these DBW trucks tps reset?
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  3. 05-13-2018 #3
    2xLS1
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    There is no IAC on DBW.
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  4. 05-14-2018 #4
    SpudzysSpeedShop
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    Quote Originally Posted by 2xLS1 View Post
    There is no IAC on DBW.
    Thanks for pointing that out ! more used to the DBC setups, now i have about 22 degrees of timing in it, thinking at work , if i lower the base spark around the 4-8-1200 rpm cells to lessen the surge but i think it will affect the overall idle quality.
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