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Thread: LB7 defuel tables HELP please

  1. #1
    Tuner in Training
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    Oct 2016
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    LB7 defuel tables HELP please

    I have been tinkering with a 2001 LB7 tune a little, and while timing and fuel tables easy to figure out, where is the deufel tables? I see the torque base fuel quantity table. Is that the one? I dont want to adjust it really just trying to figure out what does what. Some forums say its in trans tables, under torque managment, but my 01 only shows shift points, pressures ect. Only fueling tables I see is in the engine side of things. Thanks for any help.

  2. #2
    Tuner in Training
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    Oct 2016
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    Bump anyone know?

  3. #3
    Advanced Tuner dhoagland's Avatar
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    Jun 2015
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    I'm a noob at HP Tuners...But if you look at Engine, Torque Management, SC/TC Boost control. I believe these are fuel limiters based on boost PSI most likely for smoke control.
    2 other tabs in Engine TM; General, Engine, both have torque limiting tables that I'm sure are fuel limiting.
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  4. #4
    Potential Tuner
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    Feb 2017
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    Ames, IA
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    Hey man,

    I'm not super knowledgeable on the defuel topic, but I believe most of the tuning is held within the TCM.... Not all of it though. I'd suggest looking around on Duramax Forum on the topic.