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Thread: tune help. cutting out

  1. #1
    Tuner in Training
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    tune help. cutting out

    So long story short I had a lot of issues with getting my car running right. Base tune was done by a local tuner and had a few issues with either him not paying attention or not knowing what the hell he was doing, one or the other. After finally getting it fired and on the dyno it was cutting out. He would roll into it WOT and it would just cut out like it was hitting a limiter of some kind. He could not figure it out. After copying another tune and making adjustments to it he finally got it running. I just really want to know what the issue was just out of my own curiosity. Here's the original base tune but unfortunately I cant find any of my logs. Thanks for the help.
    Attached Files Attached Files

  2. #2
    Tuning Addict 5FDP's Avatar
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    So, what is the vehicle and the parts used?

    You didn't provide any of that information so we don't know if the above tune it setup right for that parts.

    One thing for sure is that power enrichment and boost enrichment are disabled, so if you roll into boost you have a high chance of grenading the engine because fuel won't be there.
    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
    Tuner in Training
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    Sorry. 02 Camaro, Turbo 5.3, 88lb injectors, twin 340s, 78/75 turbo through a th400 and 9inch.
    Last edited by brainfear; 02-17-2020 at 08:23 AM.

  4. #4
    Tuning Addict 5FDP's Avatar
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    Okay....

    So what 88lb/hr injectors? Is there data provided and is it entered correctly?

    What 3 bar MAP sensor and is that data entered correctly?

    The PE and BE still must be addressed for sure. A log file would be really helpful once PE/BE are setup. The log must contain all data that you think is necessary for this setup as well as wideband o2 information so fueling can be seen.
    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.

  5. #5
    Tuner in Training
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    88lb deutswerk injectors and data was direct from their website. Map is a 3 bar efi source and data is correct from them. I wish I did have a log but unfortunately do not. First issue I had with this tune was min fuel milligrams. Was originally set for 42lbers and that data was not included. Could make changes and write but it would not change afr. After that was fixed it would just cutout as if it hit a limiter.

  6. #6
    Senior Tuner mbray01's Avatar
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    Trans is set to manual, needed to be set to non electric auto. I have ran into this many times. Usually between 2000-3000 rpms
    Michael Bray
    Rusty Knuckle Garage
    Slidell, Louisiana
    20yr Master Tech.
    Advanced Level Specialist
    Custom Car Fabrication, Customization, High Performance.
    GM World Class Technician
    Shop Owner

  7. #7
    Tuner in Training
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    I had a th00 on it when it was just a cam only car and never had a issue having it selected as a manual.