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Thread: Lmm question? do they kill the fuel until it sees tire speed?

  1. #1
    Junior Member Dragbear's Avatar
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    Default Lmm question? do they kill the fuel until it sees tire speed?

    It doesn't seem to matter if I am pulling a sled or trying to burn the tires on the street. If I hold the break and floor the gas I get nothing. I can hold it for a long time and get no smoke and very little boost (6psi). I let up on the brake a little so it will roll about the length of the truck and it comes alive with the black smoke and will melt the tires off. It is like a switch. If you watch a video of it at the pulls you will see no smoke for the first 30' and I have a hard time getting the sled started. I am going to pull so data logs Friday at the next pulls.
    Rick

  2. #2
    Lifetime Member LB72004's Avatar
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    LB7s and others have an "Idle pedal adjustment {B0782}" check for that. it will limit fuel while stationary.
    2008 Chevrolet 3500HD DRW LTZ
    285/75/17 Nitto Dura Grapplers, 4.56 gears, Front and rear ARB lockers, Efi Live tuning by me, Raptor 160 LP, Cognito 4-6 NTB Lift, 4" Exhaust, Built Trans by Mike L.

    Sold - 2004 LB7 Duramax, EFI Live with DSP5 Tune
    stage 4 SC transmission, 265/70/16 tires

  3. #3
    Junior Member Dragbear's Avatar
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    Thanks it has been driving me nuts!!
    My next question is can I get to it or will it be locked with the programing?
    Rick

  4. #4
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    Who wrote the programming?

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