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Forum: 4speed RWD/FWD Transmission Tuning (incl T42)

4L60E, 4L80E, 4T60E etc transmission tuning, incl T42 TCM.

  1. Exclamation Holden / Pontiac TCM Checksum errors

    Started by bK, March 31st, 2007
    2 Pages •
    1 2
    • Replies: 11
    • Views: 14,930
    GMPX
    April 21st, 2008 Go to last post

  2. 4L80E segment for OS 09379910

    Started by vortecyota, July 6th, 2010
    3 Pages •
    1 2 3
    2 Attachment(s)
    • Replies: 22
    • Views: 14,921
    vortecyota
    July 19th, 2010 Go to last post

  3. converter locking in 2nd & 3rd @ WOT

    Started by Superado, February 26th, 2009
    3 Pages •
    1 2 3
    2 Attachment(s)
    • Replies: 21
    • Views: 14,737
    ScarabEpic22
    August 31st, 2009 Go to last post

  4. Need help-Can't reduce shift times!

    Started by Mach2, May 20th, 2007
    3 Pages •
    1 2 3
    • Replies: 26
    • Views: 14,685
    Aint Skeered
    June 2nd, 2007 Go to last post

  5. 4L80E, unexplainable code 68 and weird 4-3 shift.

    Started by team-pontiac, June 14th, 2011
    4l80e, code 68, shifting problems 1 Attachment(s)
    • Replies: 8
    • Views: 14,504
    joecar
    June 19th, 2011 Go to last post

  6. List - T42 4L80E Tune Files

    Started by LeftCoast32, April 12th, 2011
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 13
    • Views: 14,465
    derkscustomcars
    February 25th, 2020 Go to last post

  7. 4l60e manual shift tune?

    Started by mrgrimm, April 8th, 2013
    2 Pages •
    1 2
    • Replies: 13
    • Views: 14,127
    mrgrimm
    April 11th, 2013 Go to last post

  8. stall converters! what needs to be adjusted? (4l60E)

    Started by SimpleManLance, May 14th, 2011
    2 Pages •
    1 2
    4 Attachment(s)
    • Replies: 19
    • Views: 14,081
    SimpleManLance
    May 16th, 2011 Go to last post

  9. Stop TCC unlock when coasting?

    Started by LS1_Dragster, May 25th, 2010
    2 Pages •
    1 2
    • Replies: 14
    • Views: 14,001
    LS1_Dragster
    May 27th, 2010 Go to last post

  10. 4L80E swap problems

    Started by JoshH, March 4th, 2014
    2 Attachment(s)
    • Replies: 7
    • Views: 13,869
    JoshH
    March 9th, 2014 Go to last post

  11. t42 4l80e tune

    Started by eacostad, April 12th, 2011
    4l80e, ly6, t42, tcm, tune 1 Attachment(s)
    • Replies: 7
    • Views: 13,621
    ScarabEpic22
    May 10th, 2013 Go to last post

  12. A4 Corvette w/3.90s wont shift at WOT

    Started by Chuck CoW, August 4th, 2006
    3 Pages •
    1 2 3
    2 Attachment(s)
    • Replies: 24
    • Views: 13,588
    Chuck CoW
    August 17th, 2006 Go to last post

  13. Upshifts Too Late, Downshifts Too Soon In One Truck But Works Great In Another

    Started by Supercharged111, March 14th, 2018
    3 Pages •
    1 2 3
    11 Attachment(s)
    • Replies: 24
    • Views: 13,574
    Supercharged111
    March 22nd, 2018 Go to last post

  14. 4l60E 4th shift pressure 96PSI

    Started by HellKnightHicks, December 9th, 2014
    3 Pages •
    1 2 3
    2 Attachment(s)
    • Replies: 23
    • Views: 13,394
    HellKnightHicks
    December 11th, 2014 Go to last post

  15. Looking for a stock T42 4L80E cal

    Started by Redline Motorsports, December 13th, 2009
    2 Attachment(s)
    • Replies: 9
    • Views: 13,353
    slow67
    January 17th, 2010 Go to last post

  16. 4L80e swap, won't shift 1>2 WOT

    Started by LS1FREEK, February 26th, 2013
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 16
    • Views: 13,305
    LS1FREEK
    March 22nd, 2013 Go to last post

  17. T42 Pressure's

    Started by GAMEOVER, October 15th, 2008
    3 Pages •
    1 2 3
    • Replies: 25
    • Views: 13,227
    GAMEOVER
    April 14th, 2009 Go to last post

  18. 2009 Silvy with 4L80E swap ... can someone look over the TCM file?

    Started by Mean Green Z28, May 5th, 2016
    3 Pages •
    1 2 3
    3 Attachment(s)
    • Replies: 20
    • Views: 13,086
    joecar
    March 9th, 2019 Go to last post

  19. flashing for 4l80

    Started by akafred, October 6th, 2012
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 17
    • Views: 12,984
    mauro's automotive
    April 16th, 2020 Go to last post

  20. Shifting issues 99 A4 Z28

    Started by mzoomora, May 23rd, 2006
    3 Pages •
    1 2 3
    • Replies: 26
    • Views: 12,883
    mzoomora
    June 25th, 2006 Go to last post
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