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Forum: Custom Operating Systems

Speed Density, Valet Mode, 2-Step, alpha-N. No Diesel DSP

  1. Talking Sticky Thread Sticky: Custom OS#5

    Started by Black02SS, May 17th, 2006
    11 Attachment(s)
    • Replies: 354
    • Views: 394,233
    Highlander
    April 15th, 2022 Go to last post

  1. Go back to original operating system?

    Started by bad boyz racing, September 3rd, 2012
    • Replies: 14
    • Views: 13,611
    Supercharged111
    May 26th, 2023 Go to last post

  2. cos5 semi-open e85

    Started by Big Block, November 6th, 2022
    • Replies: 1
    • Views: 2,592
    joecar
    November 13th, 2022 Go to last post

  3. COS 5 Fuel VE multiplier

    Started by Highlander, December 7th, 2009
    • Replies: 8
    • Views: 7,254
    joecar
    October 25th, 2022 Go to last post

  4. P59 COS3 04073003 flex fuel issues

    Started by dmaxguy2008, July 30th, 2020
    flex fuel p59 cos3 5 Attachment(s)
    • Replies: 24
    • Views: 13,121
    Highlander
    February 26th, 2022 Go to last post

  5. LS1B 1bar SD COS

    Started by hrspwr, October 7th, 2020
    3 Attachment(s)
    • Replies: 23
    • Views: 16,950
    joecar
    December 26th, 2020 Go to last post

  6. Turbo ls breakup/flutter/ bouncing boost gauge

    Started by dmaxguy2008, June 29th, 2020
    break up turbo spark
    • Replies: 12
    • Views: 8,014
    dmaxguy2008
    July 28th, 2020 Go to last post

  7. HELP! FEQ_AES_DMA is adding fuel?

    Started by dmaxguy2008, May 19th, 2020
    cos3, idle, rich
    • Replies: 2
    • Views: 5,065
    joecar
    May 27th, 2020 Go to last post

  8. Looking for COS and starter tune for Gen1, '411, SD, cable throttle

    Started by Jim Blackwood, May 8th, 2020
    • Replies: 4
    • Views: 4,579
    Jim Blackwood
    May 12th, 2020 Go to last post

  9. Questions AutoVE Tuning my first turboed engine custom os #3 LS1B

    Started by luckeyhammer, April 13th, 2020
    7 Attachment(s)
    • Replies: 24
    • Views: 14,030
    nonnieselman
    April 17th, 2020 Go to last post

  10. COS question for LS1B

    Started by 2002_z28_six_speed, April 3rd, 2020
    • Replies: 4
    • Views: 5,389
    2002_z28_six_speed
    April 16th, 2020 Go to last post

  11. Cruise control DBW 03190003 OS

    Started by derkscustomcars, August 14th, 2017
    • Replies: 1
    • Views: 6,417
    Highlander
    March 4th, 2020 Go to last post

  12. Since GM tuning is ending...

    Started by LSxPwrdZ, January 24th, 2019
    • Replies: 18
    • Views: 17,933
    ToonerSQUAD89
    January 26th, 2020 Go to last post

  13. complete noob needs help opening a .tun file

    Started by jeeper, October 31st, 2019
    1 Attachment(s)
    • Replies: 8
    • Views: 8,455
    ScarabEpic22
    November 5th, 2019 Go to last post

  14. complete noob needs help opening a .tun file

    Started by jeeper, October 31st, 2019
    • Replies: 1
    • Views: 5,219
    jeeper
    October 31st, 2019 Go to last post

  15. Need Help with Excessive Timing Retard in Boost - COS3

    Started by bubba2533, October 9th, 2019
    2 Attachment(s)
    • Replies: 2
    • Views: 13,600
    bubba2533
    October 21st, 2019 Go to last post

  16. Os 04073005

    Started by SS2win, August 20th, 2019
    • Replies: 15
    • Views: 8,936
    Highlander
    October 13th, 2019 Go to last post

  17. 2003 LS1B 0411 COS3 loss of Timing when under boost

    Started by Age08, June 18th, 2019
    5 Attachment(s)
    • Replies: 6
    • Views: 4,369
    Age08
    June 26th, 2019 Go to last post

  18. Upgrading to COS E40 ECM

    Started by sonicgroove, December 4th, 2018
    • Replies: 8
    • Views: 18,873
    ScarabEpic22
    December 12th, 2018 Go to last post

  19. 2005 Silverado Installing ethanol content sensor

    Started by Andyb756, October 3rd, 2018
    • Replies: 16
    • Views: 17,033
    Andyb756
    October 29th, 2018 Go to last post

  20. Do I have to have a commercial license to upgrade OS?

    Started by Diarrheabetes, May 6th, 2018
    • Replies: 19
    • Views: 18,739
    ScarabEpic22
    August 15th, 2018 Go to last post
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