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Thread: 600 rpm slip limit solved!!!! OS 25941752

  1. #1
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    Cool 600 rpm slip limit solved!!!! OS 25941752

    Hey guys figured I better make my first post here a good one so here it is, after countless nights awake reversing code in the a40 tcu

    I HAVE FOUND AND AM ABLE TO CHANGE THE FACTORY SLIP LIMIT 625rpm!!!,

    her is a log proving I have done this! I would like to test this on a few others so for anyone who wishes for me to change your limit send me a copy of your stock tcu file and i will change it to whatever you like.

    I got a full binary from ross and decompiled with idapro. There is also two more colums in the tcc on ramp rate that arent available in the current
    efilive calz file, this and 900+ rpm slip at lockup in third will break the tires loose!
    Click image for larger version. 

Name:	933sliplock.jpg 
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ID:	15224
    Attached Files Attached Files
    2007 Classic CCLB, LBZ - EFIlive, Custom 4 inch downpipe and exhaust, Stock trans with BD tripple disk shimmed relief and modded knockdown valve.
    35/12.50/17 Toyo Open country MT's
    1987 Toyota 4x4 8" lift, 35/13.5/15 Toyo open country's, Trail gear suspension, 22r turbo on Propane @ 20psi boost GT2860RS turbo, V6 R150 Transmission.

  2. #2
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    here's a pic of my modified Efilive calibration to edit the slip limit and the whole TCC on ramp rate.
    Click image for larger version. 

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    2007 Classic CCLB, LBZ - EFIlive, Custom 4 inch downpipe and exhaust, Stock trans with BD tripple disk shimmed relief and modded knockdown valve.
    35/12.50/17 Toyo Open country MT's
    1987 Toyota 4x4 8" lift, 35/13.5/15 Toyo open country's, Trail gear suspension, 22r turbo on Propane @ 20psi boost GT2860RS turbo, V6 R150 Transmission.

  3. #3
    Lifetime Member vortecfcar's Avatar
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    First of all, congratulations!

    That's a worthy first post if I've ever seen one.

    Did you find this as a simple Hex address or does it require you to patch the O.S. Just curious.

    Ive attached the OS for you to apply the update to, or you can send me the hex adress and ill edit it.

    Either way, welcome to the forum!

    Nick

    ps- Is there a way I can contact you privately? The PM function is not active on your user name.
    Attached Files Attached Files

  4. #4
    Lifetime Member Dmaxink's Avatar
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    Default 600 rpm slip limit solved!!!! OS 25941752

    Great work!
    Last edited by Dmaxink; June 1st, 2013 at 11:11 AM.
    -Kory

    I'm out of ideas? Nah trick... When in doubt, 0xFFFF it out!

    http://www.PPEI.com/

  5. #5
    Lifetime Member Dmaxink's Avatar
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    Default 600 rpm slip limit solved!!!! OS 25941752

    Quote Originally Posted by mitchd View Post
    Hey guys figured I better make my first post here a good one so here it is, after countless nights awake reversing code in the a40 tcu

    I HAVE FOUND AND AM ABLE TO CHANGE THE FACTORY SLIP LIMIT 625rpm!!!,

    her is a log proving I have done this! I would like to test this on a few others so for anyone who wishes for me to change your limit send me a copy of your stock tcu file and i will change it to whatever you like.

    I got a full binary from ross and decompiled with idapro. There is also two more colums in the tcc on ramp rate that arent available in the current
    efilive calz file, this and 900+ rpm slip at lockup in third will break the tires loose!
    Click image for larger version. 

Name:	933sliplock.jpg 
Views:	723 
Size:	145.8 KB 
ID:	15224
    Heck man if you want just send me that TCU file to Kory@LAtuning.com!

    I will test Monday!

    Thanks,
    Kory
    -Kory

    I'm out of ideas? Nah trick... When in doubt, 0xFFFF it out!

    http://www.PPEI.com/

  6. #6
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    This is going to be HUGE for the Allison guys...
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, starting the mods
    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.

  7. #7
    Lifetime Member THEFERMANATOR's Avatar
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    Quote Originally Posted by ScarabEpic22 View Post
    This is going to be HUGE for the Allison guys...
    I see alot fewer lockup boxes being sold. Now if somebody could find the torque converter unlock table at 0% throttle I would be alot happier. Having the converter unlock below 55 anytime I let off the throttle regardless of where I set the unlock table is rather annoying.
    1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, little of this, a little of that,
    DIAMONDEYE 4" exhaust, CORSA muffler, AFE stage 1 dry filter, custom tuning by me, KENNEDY single pump and pump rub kit.

  8. #8
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    Default 600 rpm slip limit solved!!!! OS 25941752

    Quote Originally Posted by THEFERMANATOR View Post
    Having the converter unlock below 55 anytime I let off the throttle regardless of where I set the unlock table is rather annoying.
    Agreed 100%
    14 GMC Sierra
    5.3L CC SB 4x4
    Basic tuning....

  9. #9
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    Quote Originally Posted by THEFERMANATOR View Post
    I see alot fewer lockup boxes being sold. Now if somebody could find the torque converter unlock table at 0% throttle I would be alot happier. Having the converter unlock below 55 anytime I let off the throttle regardless of where I set the unlock table is rather annoying.
    Agreed, but it's a global truck issue. REALLY wish the T42s would have this table in truck OSs, not just car OSs.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, starting the mods
    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.

  10. #10
    Lifetime Member THEFERMANATOR's Avatar
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    Quote Originally Posted by ScarabEpic22 View Post
    Agreed, but it's a global truck issue. REALLY wish the T42s would have this table in truck OSs, not just car OSs.
    I'm running the AL5, not a GM T42 TCM. The ALLISON TCM has ALOT of un-mapped parameters in it.
    1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, little of this, a little of that,
    DIAMONDEYE 4" exhaust, CORSA muffler, AFE stage 1 dry filter, custom tuning by me, KENNEDY single pump and pump rub kit.

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