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Thread: LMM defuel

  1. #1
    New Member
    Join Date
    Mar 2006

    Default LMM defuel

    This has been talked about one other forums before with no solution. This is for sled pullers with the LMM. How do you get the defuel right for smooth shifting??? I haven't talked to one person yet that has this figured out. It doesn't matter if you have a built trans or not, they shift like crap in 4lo with a sled hooked behide you. It feels like the truck is going to break inhalf. It doesn't matter who's tune I use they all react the same. Anyone with a LMM, that pulls, have smooth shifting tune? Is there something missing in EFI Live, like the low range rev limiter issue in the past? Any help?


  2. #2
    Senior Member DmaxHawk's Avatar
    Join Date
    Apr 2008


    Are you adjusting your ECM or TCM tune?
    07 El Bee Zee
    Little faster than stock...

  3. #3
    New Member
    Join Date
    Mar 2006



  4. #4
    Lifetime Member killerbee's Avatar
    Join Date
    Jan 2006


    are you logging the shifts? Post it here.
    Michael, Systems Engineer 04.5 D-max LLY, Phoenix, Arizona Email
    Custom Tuning Services
    DURAMAX/CUMMINS ECM's TCM's for sale, all years, 20% wholesale discount available
    EFILive's first VGT "Software Wastegate Tune"

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