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Thread: LT1 wont start after cam an Maggie additions

  1. 03-14-2022 #1
    T_Millz
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    Unhappy LT1 wont start after cam an Maggie additions

    Just upgraded alot here.. LT4 HVFP an Injectors.. ported an CnC'd heads Texas stage 2(231/235..645/635) e85 kit(previously) an 2650 Mag!! got everything in an connected! grounds everything checked 4 times went to tune a lil, Idle cam up a lil, delete VVT ,entered new injector values, go to turn it over an nothing!! just spins.. no spit, no poot, no buck... nothing.. A guy ws telling me I had a 1 bar map an the maggie has a 3 bar, will that stop everything from working? Need help guys bad!! Thanks for anything in advance..

    #StuckLikeChuck..
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  2. 03-14-2022 #2
    5FDP
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    Well we can't see what you see, so I suggest posting your tune/logs.

    And yes, if the supercharger comes with a 3 bar MAP and you are still using 1 bar MAP settings, that will make it not want to start.
    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.
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  3. 03-15-2022 #3
    Ben Charles
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    You need a tune update for the LT4 fueling, if tube size changed on the MAF, map sensor change, VT changes, VVE changes… a oh mds like you’re in over your head.. send me a PM and can get this rig going

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  4. 03-26-2022 #4
    T_Millz
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    The Maggie comes with a 3 bar, I looked the numbers up on the back to sure, also changed the logs to 425 as a ZL1
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  5. 03-26-2022 #5
    T_Millz
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    Mostly ZL1 copy over.. I'd thought it would help

    2017 SS TM Stock 4 Inj. change, VVT disable_mirror ZL1.hpt
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  6. 03-27-2022 #6
    SultanHassanMasTuning
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    key on engine off log

    why did you selecting fueling to be single bank
    Last edited by SultanHassanMasTuning; 03-27-2022 at 06:14 AM.
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