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Thread: upgraded spider on 99 4.3l vortec

  1. #1
    Potential Tuner
    Join Date
    Aug 2018
    Posts
    5

    upgraded spider on 99 4.3l vortec

    I had my spider upgraded and I wondered if the injector settings should be different with the new injectors or if the old parameters would be right.

  2. #2
    Tuner in Training
    Join Date
    Jul 2018
    Location
    Virginia
    Posts
    48
    Get a tune from the repository of the year injectors you upgraded to and compare the two against each other. You can copy & paste what you need to change for the most part.