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Thread: 96 Sierra Z71 w/ L31 - tunable with EFILive?

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  1. #1
    Lifetime Member Garry's Avatar
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    Default 96 Sierra Z71 w/ L31 - tunable with EFILive?

    Guy on the FBody forum picked up a 96 Sierra ... on the supported vehicle list I can only find 99 and up ... will EFILive be able to tune it?
    Garry Glendown * '17 Fifty 2SS MT * 99 Firehawk Convertible (for sale)

  2. #2
    Lifetime Member hquick's Avatar
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    I believe only 98+99 (OBS) black box Vortec's are supported...but not 100% sure. Also must have V2.
    He could do the 0411 swap.
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
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    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

  3. #3
    Lifetime Member Aloicious's Avatar
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    Quote Originally Posted by Garry View Post
    Guy on the FBody forum picked up a 96 Sierra ... on the supported vehicle list I can only find 99 and up ... will EFILive be able to tune it?
    nope, I believe V2 supports 98+ but no love for the earlier L31's. he can swap to a 12200411 PCM like I did and use efilive though. the swap only costs around $100-$150, and is pretty simple if he's able to splice a couple wires, and move some pins around.

    if he doesn't want to do that, I believe the only programs that have support for the '96-97's are tunercats II (which is hard to find because they sold their rights to Jet), and Jet DST (which from what I've heard, offers no support, no software updates, and is not very user friendly.).
    1996 c1500 gen1e 5.7L - the "LS31", 24x CNP, LS2 coils, modified T56, 12200411PCM running COS3, zz4 cam, custom MPFI, etc. coming soon: Twin Turbos

  4. #4
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    Short answer is NO (in stock form).

    Spend 100-150 like Aloicious said and have him do a 0411 PCM swap. Then he'll be good to go with everything the LS1s get like the COSs.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

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