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Thread: Injector pulse jumps to 499ms at fire up

  1. #1
    Potential Tuner
    Join Date
    Jul 2020
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    Injector pulse jumps to 499ms at fire up

    Can anyone tell me why my injector pulse goes up to 499ms as soon as my engine fires up? Floods out immediately with plugs soaked with gas

    Stock tune with vats removed, converted to cable throttle, tables adjusted for injectors. I also bumped up the injector flow rate 25% higher, because it wouldnt even fire at the correct rate.

    Lq4
    milled 317 heads
    Texas speed 228r cam
    50lb delphi flex fuel injectors
    long tubes
    Attached Files Attached Files

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
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    13,533
    Post the tune.

    Do not put the wrong data in for the injectors, they are set and forget table.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
    Potential Tuner
    Join Date
    Jul 2020
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    5
    Here is the tune. With the correct injector flow rate.
    Attached Files Attached Files
    Last edited by caseyreed76; 08-11-2020 at 08:24 PM.