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Thread: Mafless Tune Help

  1. #1
    Potential Tuner
    Join Date
    Jun 2019
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    2

    Mafless Tune Help

    Hello everyone, I'm brand new to the forum. I've been researching through the mountains of info in this Forum and figured id ask for help instead before I mess anything up. I've been playing with it by uploading different stock tunes but I've had no luck so far.

    It does not have the MAF(completely removed) only a Intake Air Temp sensor.

    I am having issues with startup and idle. Im sure its because its mafless

    It drives good btw

    I got a C10 5.3 w/ 4l60e Automatic Swap

    mods: Intake, headers, catless

    I have uploaded the tune and a datalog

    Im probably gonna get some heat from what was done on the tune but hey im trying lol

    I'm willing to pay someone to help me get it dialed in or whatever I need to do

    The help and tips are appreciated
    Attached Files Attached Files

  2. #2
    why not put a maf on it?

  3. #3
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    13,533
    The MAF isn't really needed, they can run just fine without one.

    Are you running o2 sensors at all? I notice bank one is at 450mv, which is like it's unplugged and bank 2 is kinda doing nothing.

    Did you set the P/N base running airflow to zero's? I don't think it should be that way.

    Also the cylinder volume is wrong, the computer thinks it's a 6.0 and not a 5.3 so all the airflow and fueling calculations are off some.
    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.

  4. #4
    Tuning Addict blindsquirrel's Avatar
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    Apr 2017
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    Meridian MS
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    There are also no MAF DTCs set in that log file.