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Thread: tuning help ! 5.3 w/ cam , 3 bar map, decapped injectors and turbo

  1. #21
    Tuner in Training
    Join Date
    Jun 2018
    Posts
    18
    just forgot to turn it to non electronic trans and we are running a th400

  2. #22

  3. #23
    Tuner in Training
    Join Date
    Jun 2015
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    30
    what kind of 3bar map u got? and post ur tune file.

  4. #24
    Tuner in Training
    Join Date
    Jun 2018
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    18
    new style gm 3 bar fixed help.hpt

  5. #25
    Tuner in Training
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    Jun 2015
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    30
    is it zr1 map?

  6. #26
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
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    13,576
    I may as well just pound my face into a wall sometimes, a few things are still the same.

    Disable the PRNDL with a Th400 swap. Change the cylinder volume and the injector stuff to get you the best chance at getting this thing running.
    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.

  7. #27
    Tuner in Training
    Join Date
    Jun 2018
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    18
    its the brick style cobe 749

  8. #28
    Tuner in Training
    Join Date
    Jun 2015
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    30
    u have to change cylinder volume to (0.66594) also u have to pump ur target idle to( 700 ) also multiply (1.50)g/s ur idle airflow form 20 to 140 and as 5pdf says work on ur injector flow, offset, injector pulse.

  9. #29
    Tuner in Training
    Join Date
    Jun 2018
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    18
    just burnt the starter, thanks for the help so far, gonna continue to mess with the tune this weekend when I get a new starter

  10. #30
    Tuner in Training
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    Jun 2018
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    18
    Alright fellas here is the latest tune and log , Cant get it to run on its own nor rev, it will try to idle if my foots to the floor then it back fires and dies
    1.hplfixed help.hpt

  11. #31
    Senior Tuner
    Join Date
    Apr 2007
    Posts
    1,104
    first problem. Your injectors. You're going to be chasing issues from first fire till it blows up. Get rid of them.
    The most hated, make the most power.
    93 Ranger. 5.3 D1X. 1069hp.

  12. #32
    Tuner in Training
    Join Date
    May 2017
    Posts
    17
    My build would not start because the Crankshaft Sensor was hitting the reluctor wheel on the crank. Changed it out with one made in USA (Noticeably shorter) and it started right up. Pull it out and see if it is hitting the reluctor wheel, you'll see rubbing marks on the sensor.