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Forum: GM EFI Systems

TBI - TPI - MPFI - CFI - SFI

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  1. Each thread is by ECM number with Bins, definition files, wiring diagrams history and tuner information!

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    Forum Statistics:

    • Threads: 53
    • Posts: 271
  1. Shift Time 0 vs 6.38?

    Started by deva123, 12-31-2023
    • Replies: 11
    • Views: 830
    01-15-2024 Go to last post
  2. TBI Pressure Regulator & Fuel Pump

    Started by Parts, 01-13-2024
    • Replies: 5
    • Views: 443
    01-14-2024 Go to last post
  3. 1995 LT1 Camaro Tuning tips

    Started by fourcams, 01-09-2024
    • Replies: 8
    • Views: 575
    01-13-2024 Go to last post
  4. switching to 3.8l coils $8B

    Started by BigBanks78, 11-07-2023
    2 Pages
    1 2
    • Replies: 18
    • Views: 2,754
    01-08-2024 Go to last post
  5. MEFI 4B Tuning

    Started by martymonaro, 01-03-2024
    • Replies: 2
    • Views: 398
    01-03-2024 Go to last post
  6. 7427 data logs closed loop issue

    Started by Parts, 01-01-2024
    • Replies: 8
    • Views: 592
    01-02-2024 Go to last post
  7. apu1 vs dynamic efi?

    Started by stackz, 11-27-2023
    2 Pages
    1 2
    • Replies: 15
    • Views: 2,183
    01-02-2024 Go to last post
  8. Stupid question

    Started by J3920, 01-01-2024
    • Replies: 5
    • Views: 421
    01-02-2024 Go to last post
  9. lowering VE at low kPa

    Started by nilak, 12-28-2023
    • Replies: 0
    • Views: 236
    12-28-2023 Go to last post
  10. NEED HELP PLEASE ecm swap

    Started by six4chevy, 12-24-2023
    • Replies: 4
    • Views: 474
    12-24-2023 Go to last post
    • Replies: 13
    • Views: 846
    12-24-2023 Go to last post
  11. Knock Sensor, Knock Filter, ESC and swaps!

    Started by JeepsAndGuns, 01-18-2013
    3 Pages
    1 2 3
    • Replies: 43
    • Views: 33,926
    12-23-2023 Go to last post
  12. Cannot seem to get AE/PE right

    Started by sntrym95, 12-20-2023
    • Replies: 12
    • Views: 767
    12-23-2023 Go to last post
  13. MEFI4 passcode

    Started by Mykk, 12-20-2023
    • Replies: 0
    • Views: 241
    12-20-2023 Go to last post
  14. 2005 Silverado PCM

    Started by fish2222, 12-16-2023
    • Replies: 2
    • Views: 413
    12-19-2023 Go to last post
    • Replies: 9
    • Views: 2,689
    12-13-2023 Go to last post
    • Replies: 7
    • Views: 638
    12-12-2023 Go to last post
    • Replies: 11
    • Views: 2,201
    12-10-2023 Go to last post
    • Replies: 14
    • Views: 6,956
    12-10-2023 Go to last post

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