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Thread: Huge Surge Coming To Stop

  1. #1

    Huge Surge Coming To Stop

    2018 Sierra 5.3L with BTR 210/223 .540"/.540" 111LSA +14% Camshaft will surge and lunge coming to a stop. It doesn't do it with the MAF failed. Is the MAF the issue? or is there something else I need to dial in? Both tune files attached.

  2. #2
    Quote Originally Posted by 30thta436 View Post
    2018 Sierra 5.3L with BTR 210/223 .540"/.540" 111LSA +14% Camshaft will surge and lunge coming to a stop. It doesn't do it with the MAF failed. Is the MAF the issue? or is there something else I need to dial in? Both tune files attached.
    Couple of things stuck out, but try this and see if it still fights you.
    Also your knock sensors were basically shut off. Not sure if that was intentional or not.
    You're going to need to get your airflow models closer as well.

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