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  1. #1
    RIP EagleMark's Avatar
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    Yeah you could disable it, but should be a way to make it work right too!

    Seems if this was set correctly it would work? "4wd Low Reduction Ratio" I know when I used a scantool on my LT1 4l60E I found the speed way off and not locking up TCC till like 80 MPH...

    You may need to use the trans ADX and do a datalog to see what's going on!

    "==== 4L60-E Jump Shift Compensation Parameters =========="

    Maybe keeping trans in third or shifting manually will help the skipshift? Scaler "Disable Manual Shift Pattern" is set on stock.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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  2. #2
    Fuel Injected! PJG1173's Avatar
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    Quote Originally Posted by EagleMark View Post
    "==== 4L60-E Jump Shift Compensation Parameters =========="
    OMG if that was a snake it would have bit me... looking at it now. I have been keeping it in 3rd. on the hill and hole I had to pull it down to 2nd to keep my RPM's up so the motor wouldn't bog.
    87 4Runner, 15" spring lift, 3" body, chevy vortec 355, 5.29 gears, 38.5x15.5x15" Boggers, 280hr, 16168625 running $0D
    93 S10, 36x12.5x15 TSL's, custom turbo headers, 266HR cam, p&p vortec heads, $0D Marine MPFI with 8psi boost.
    05 Silverado, 2' lift, 4" exhaust, Bully Dog programmer,

  3. #3
    RIP EagleMark's Avatar
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    You may need to use the trans ADX and do a datalog to see what's going on!
    If you've never done this it is just as amazing data as engine!

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  4. #4
    Fuel Injected! PJG1173's Avatar
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    I did some google searching on Jump Shift and turned up zilch. Anyone know how this works?
    87 4Runner, 15" spring lift, 3" body, chevy vortec 355, 5.29 gears, 38.5x15.5x15" Boggers, 280hr, 16168625 running $0D
    93 S10, 36x12.5x15 TSL's, custom turbo headers, 266HR cam, p&p vortec heads, $0D Marine MPFI with 8psi boost.
    05 Silverado, 2' lift, 4" exhaust, Bully Dog programmer,

  5. #5
    RIP EagleMark's Avatar
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    When accelerating hard and you let off a little it skips a gear to where it should be...

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  6. #6
    Fuel Injected! PJG1173's Avatar
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    Quote Originally Posted by EagleMark View Post
    When accelerating hard and you let off a little it skips a gear to where it should be...
    thats the problem I never let off.
    87 4Runner, 15" spring lift, 3" body, chevy vortec 355, 5.29 gears, 38.5x15.5x15" Boggers, 280hr, 16168625 running $0D
    93 S10, 36x12.5x15 TSL's, custom turbo headers, 266HR cam, p&p vortec heads, $0D Marine MPFI with 8psi boost.
    05 Silverado, 2' lift, 4" exhaust, Bully Dog programmer,

  7. #7
    RIP EagleMark's Avatar
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    Quote Originally Posted by PJG1173 View Post
    thats the problem I never let off.
    I like your style!

    May be different in your mask? Only time I have dealt with this is in the LT1 $EE...

    I have found a couple times transmissions do weird things after some tables have been messed with. If you done a lot of changes maybe going back to stock trans bin file and decrease shift times if you don't have a shift kit and "Disable Manual Shift Pattern" so you can shift manually. Then do a trans Data log and you will see exactly what it is doing and why...

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

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