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Thread: Injector swap questions

  1. #1
    Tuner in Training
    Join Date
    Feb 2010
    Posts
    34

    Injector swap questions

    I am swapping the injectors in my 2000 C/K truck with a 7.4L engine. What do i need to change in my tune besides the injector flow rate the stock injectors are 19.4lbs/ H and the new ones are 23.3lbs/H
    Here is my stock tune and my current tune. the injectors I put in are GM part number 25313185 and the specs i could find on there are lbs/H 23.3 cc/min 244.9 grams 176.1 43.5 psi

  2. #2
    Find a tune in the repository with a 7.4 and copy the injector data over.

  3. #3
    Advanced Tuner
    Join Date
    Jun 2007
    Posts
    396
    Or use the attached excel to calc new injector data
    2011 Z07 Carbon Edition

  4. #4
    Tuner in Training
    Join Date
    Feb 2010
    Posts
    34
    I have put the data in the calculator but i don't see where it goes in this ECM. It is different than the newer ones