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Thread: Lean Cruise, the real story

  1. #11
    Lifetime Member GMPX's Avatar
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    Don't know, I started this stuff back in the Commodore 64 days!!

    Unfortunatley the two people in the LS1 'scene', myself and Chris at HPT are maybe the only ones who know how to do this?.
    The process.....

    1 - Skip the Lean Cruise Platform check (different spot on all O.S's).
    2 - Recalculate the checksum
    3 - Fill Lean cruise table

    NOTE: On ETC vehicles if you get the checksum wrong your PCM is toasted, chip off to recover it.

    OR

    Upgrade to any V3 O.S and use the MAP vs RPM AFR table to command leaner.

    Cheers,
    Ross
    I no longer monitor the forum, please either post your question or create a support ticket.

  2. #12
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    FWIW, the US GTO's pass the platform check I'm running lean cruise on my GTO, and it in fact works like a charm.

  3. #13
    Lifetime Member 87gmc's Avatar
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    Quote Originally Posted by Brains
    FWIW, the US GTO's pass the platform check I'm running lean cruise on my GTO, and it in fact works like a charm.

    Time to buy a Goat

  4. #14
    EFILive Crew Site Admin Tordne's Avatar
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    Sounds like good justification to go plead your case to the wife

    You should win based solely on the grounds of current petrol/fuel prices :!: :!:
    Andrew
    EFILive Crew


  5. #15
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    Its not a huge increase, but according to the DIC fuel mileage increases about 2mpg give or take a few tenths depending on speed. But hey, every little bit counts.

  6. #16
    Lifetime Member 87gmc's Avatar
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    Quote Originally Posted by Brains
    Its not a huge increase, but according to the DIC fuel mileage increases about 2mpg give or take a few tenths depending on speed. But hey, every little bit counts.
    with the new table introduced on the custome o.s. i have seen a 4 mpg increase

  7. #17
    EFILive Reseller kbracing96's Avatar
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    Quote Originally Posted by 87gmc
    Quote Originally Posted by Brains
    Its not a huge increase, but according to the DIC fuel mileage increases about 2mpg give or take a few tenths depending on speed. But hey, every little bit counts.
    with the new table introduced on the custome o.s. i have seen a 4 mpg increase
    Are you talking about the command A/F table, or is there another way to setup lean cruse with it? What setting are you using? I just got EFILive Commercial and am still trying to familiarize my self with it. I've been reading and reading, trying to learn all about this stuff, but haven't jumped in and changed anything yet. But I have all the tools :lol: I just want to get my turbo running the best I can and get lean cruse setup for now. I'm going to setup a 3 bar tune for the turbo when I get home, but I have a 1200 mile drive to get there in about a week and and half, would be nice to get the lean cruse working by then .
    01 ECSB 1/2 ton 4x4 Forged 5.7 LS1 GMC

    Custom KBracing front mounted, BW S480, intercooled turbo


  8. #18
    Lifetime Member 87gmc's Avatar
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    Quote Originally Posted by kbracing96
    Quote Originally Posted by 87gmc
    Quote Originally Posted by Brains
    Its not a huge increase, but according to the DIC fuel mileage increases about 2mpg give or take a few tenths depending on speed. But hey, every little bit counts.
    with the new table introduced on the custome o.s. i have seen a 4 mpg increase
    Are you talking about the command A/F table, or is there another way to setup lean cruse with it? What setting are you using? I just got EFILive Commercial and am still trying to familiarize my self with it. I've been reading and reading, trying to learn all about this stuff, but haven't jumped in and changed anything yet. But I have all the tools :lol: I just want to get my turbo running the best I can and get lean cruse setup for now. I'm going to setup a 3 bar tune for the turbo when I get home, but I have a 1200 mile drive to get there in about a week and and half, would be nice to get the lean cruse working by then .
    B3647 is the table

  9. #19
    Junior Member
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    Default Re: Lean Cruise, the real story

    Quote Originally Posted by GMPX

    moveq #2,d1 ; #2 = Platform is Holden
    cmp.b (byte_0_1E5C5).l,d1 ; Check against Platform type in cal
    bne.s loc_0_29A96 ; If not the Holden then skip Lean Cruise
    jsr sub_0_2F68E ; Jump to Lean Cruise Subroutine

    loc_0_29A96:
    jsr sub_0_38372 ; Jump to Knock control subroutine
    can you tell me all that stuff that I am looking for in a 2001 camaro/firebird

    I understand what I'm loking at... I just need some "reference locations"

    I do NOP understand What to do just dont NOP where to do it

  10. #20
    Lifetime Member 87gmc's Avatar
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    Default Re: Lean Cruise, the real story

    Quote Originally Posted by soundengineer
    Quote Originally Posted by GMPX

    moveq #2,d1 ; #2 = Platform is Holden
    cmp.b (byte_0_1E5C5).l,d1 ; Check against Platform type in cal
    bne.s loc_0_29A96 ; If not the Holden then skip Lean Cruise
    jsr sub_0_2F68E ; Jump to Lean Cruise Subroutine

    loc_0_29A96:
    jsr sub_0_38372 ; Jump to Knock control subroutine
    can you tell me all that stuff that I am looking for in a 2001 camaro/firebird

    I understand what I'm loking at... I just need some "reference locations"

    I do NOP understand What to do just dont NOP where to do it

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