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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: 272
    • Replies: 3
    • Views: 9,514
    07-10-2019 Go to last post
    • Replies: 0
    • Views: 11,805
    07-04-2019 Go to last post
  1. Woody needs EFI tuning

    Started by AdrianS, 06-04-2019
    • Replies: 9
    • Views: 14,141
    07-04-2019 Go to last post
    • Replies: 2
    • Views: 11,519
    07-03-2019 Go to last post
    • Replies: 2
    • Views: 16,079
    07-01-2019 Go to last post
  2. 1995 5.7 z28 programming

    Started by bdads, 06-29-2019
    • Replies: 3
    • Views: 10,784
    06-29-2019 Go to last post
  3. Tuning help needed - '91 TBI 383 w/ Vortec heads

    Started by Daveo91, 10-12-2018
    5 Pages
    1 2 3 4 5
    • Replies: 62
    • Views: 68,136
    06-29-2019 Go to last post
    • Replies: 6
    • Views: 14,341
    06-26-2019 Go to last post
    • Replies: 2
    • Views: 10,585
    06-26-2019 Go to last post
  4. Throttle Body Backfire

    Started by JCampbell, 06-17-2019
    • Replies: 8
    • Views: 15,390
    06-26-2019 Go to last post
  5. Are all the 8 pin ignition modules that same?

    Started by rang-a-stang, 06-13-2019
    2 Pages
    1 2
    • Replies: 19
    • Views: 9,357
    06-25-2019 Go to last post
  6. What Knock Sensor '0411 LT1

    Started by dave w, 06-23-2019
    • Replies: 2
    • Views: 2,476
    06-24-2019 Go to last post
  7. P66 boost-prepared code fork anyone?

    Started by Xnke, 06-24-2019
    • Replies: 2
    • Views: 2,352
    06-24-2019 Go to last post
  8. Aftermarket 7.4l TBI Harness

    Started by JCampbell, 06-23-2019
    • Replies: 2
    • Views: 2,470
    06-23-2019 Go to last post
    • Replies: 1
    • Views: 6,049
    06-23-2019 Go to last post
  9. Tuned Vortec TBI to MPFI on 7427

    Started by woody80z28, 03-07-2019
    • Replies: 12
    • Views: 16,026
    06-23-2019 Go to last post
  10. 7427 upgrade tuning help understanding

    Started by typhoonss92, 06-06-2019
    4 Pages
    1 2 3 4
    • Replies: 57
    • Views: 56,967
    06-22-2019 Go to last post
    • Replies: 6
    • Views: 3,752
    06-22-2019 Go to last post

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