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DFCO fuel cutoff tables?

This is a discussion on DFCO fuel cutoff tables? within the Computer & Tuning forums, part of the LSx Technical Help Section category; I think it's called DFCO? I need to look again,,,but anyway...there are a ton of tables in that area to ...

  1. #1
    Moderator Firebirdjones's Avatar
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    DFCO fuel cutoff tables?

    I think it's called DFCO? I need to look again,,,but anyway...there are a ton of tables in that area to look at, almost overwhelming.

    Is anyone familiar with adjusting the tables to be more aggressive on fuel cutoff when coasting? It was one of the fuel saving ideas talked about in years past but I never explored it. I remember reading in the factory tunes it's rather mild and doesn't kick on until after you are off the gas for a long period of time, something like 15-20 seconds. People were picking up several mpg by making this function more aggressive.

    I'd like some tips or pointers if anyone has experience with it. Thanks.

  2. #2
    Moderator Firebirdjones's Avatar
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    Where are all the savy tuners? Frost around anymore?

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    Veteran 0rion's Avatar
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    I've never messed with those tables other than for SD tuning.

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    Moderator Firebirdjones's Avatar
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    What would they have to do with SD tuning? I run all of our LS vehicles in SD now but I've never touched the DFCO in any of them.

  5. #5
    Moderator Firebirdjones's Avatar
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    Got a handle on it now.

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    Veteran 0rion's Avatar
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    98 Formula
    06 duramax

    sorry....missed your reply. Glad you got it figured out. I've always disabled dfco when sd tuning so it doesn't skew the numbers.

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