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Forum: HP EFI

HP EFI Tuning & Tech

  1. Sticky Thread Sticky: HP Potential RPM Input Problem

    Started by Doug F, 10-12-2010 04:57 PM
    • Replies: 0
    • Views: 17,303
    10-12-2010, 04:57 PM Go to last post
    • Replies: 0
    • Views: 18,241
    07-12-2010, 04:14 PM Go to last post
  1. In & out of Closed Loop.

    Started by George F, Today 06:48 PM
    • Replies: 0
    • Views: 4
    Today, 06:48 PM Go to last post
  2. Smile Spark table for my Ford '69 HP EFI engine.

    Started by MUST.SWEDE, 06-18-2020 12:47 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 35
    • Views: 1,033
    Today, 03:53 PM Go to last post
  3. No Start

    Started by 3DTim, 06-30-2020 08:45 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 497
    Today, 01:54 PM Go to last post
  4. Slow sync with sequential EFI question.

    Started by monaroman, 07-19-2017 12:41 AM
    3 Pages
    1 2 3
    • Replies: 26
    • Views: 2,551
    Today, 07:37 AM Go to last post
  5. Changing over to Holley HP from a Fast system.

    Started by trumanizer, 07-07-2020 08:35 AM
    • Replies: 1
    • Views: 69
    07-07-2020, 03:56 PM Go to last post
    • Replies: 2
    • Views: 72
    07-07-2020, 01:09 PM Go to last post
  6. Injector End Angle Tuning

    Started by 81 TransAm, 09-15-2017 10:01 PM
    11 Pages
    1 2 3 ... 11
    • Replies: 108
    • Views: 25,616
    07-06-2020, 01:31 PM Go to last post
  7. GM TPI HP Conversion base cal?

    Started by limachine, 07-06-2020 10:26 AM
    • Replies: 2
    • Views: 38
    07-06-2020, 12:40 PM Go to last post
  8. Bypass or blow-off?

    Started by gmh8r, 07-05-2020 02:15 PM
    • Replies: 0
    • Views: 53
    07-05-2020, 02:15 PM Go to last post
  9. Can't View Datalog

    Started by another69, 07-03-2020 03:50 PM
    • Replies: 6
    • Views: 78
    07-05-2020, 08:06 AM Go to last post
  10. Car leans out in warm temps.

    Started by Ctgreddy, 07-04-2020 08:46 AM
    • Replies: 9
    • Views: 127
    07-05-2020, 02:20 AM Go to last post
  11. Rev Limiter & Line Lock with stick car.

    Started by jb427, 06-26-2020 04:15 PM
    • Replies: 2
    • Views: 151
    07-02-2020, 01:03 AM Go to last post
  12. ECU Failure

    Started by Mike E, 07-01-2020 11:16 PM
    • Replies: 3
    • Views: 78
    07-02-2020, 12:15 AM Go to last post
  13. Seasonal Idle Fine Tuning

    Started by Qwktrip, 02-28-2020 01:47 AM
    7 Pages
    1 2 3 ... 7
    • Replies: 62
    • Views: 4,332
    07-01-2020, 11:48 PM Go to last post
  14. Can't connect USB, no communication.

    Started by Ken Rainwater, 06-29-2020 08:34 AM
    2 Pages
    1 2
    • Replies: 12
    • Views: 204
    07-01-2020, 10:57 AM Go to last post
  15. Fine tuning idle using a datalog.

    Started by Laveyman, 06-29-2020 02:43 PM
    2 Pages
    1 2
    • Replies: 12
    • Views: 201
    06-30-2020, 02:58 PM Go to last post
  16. Diode Wiring

    Started by jb427, 06-29-2020 01:43 PM
    • Replies: 4
    • Views: 101
    06-29-2020, 07:23 PM Go to last post
  17. "Get From ECU" now no fuel pump prime.

    Started by Laveyman, 06-21-2020 11:29 AM
    2 Pages
    1 2
    • Replies: 10
    • Views: 263
    06-29-2020, 12:45 PM Go to last post
  18. Tach doesn't read properly above 3500.

    Started by LB9GTA, 06-29-2020 08:51 AM
    • Replies: 2
    • Views: 63
    06-29-2020, 11:45 AM Go to last post
  19. Multi-Port Sequential Coil-On-Plug

    Started by diehrd, 06-16-2020 07:16 AM
    2 Pages
    1 2
    • Replies: 12
    • Views: 440
    06-29-2020, 10:40 AM Go to last post
  20. Initial Startup Problem

    Started by ScottChab, 06-28-2020 09:44 PM
    • Replies: 2
    • Views: 90
    06-29-2020, 09:16 AM Go to last post
  21. Post Holley 870021 Questions

    Started by graderbird2004, 06-29-2020 05:46 AM
    map, tech service, tech support
    • Replies: 0
    • Views: 45
    06-29-2020, 05:46 AM Go to last post
  22. 554-115 Peak & Hold Driver

    Started by Corvus Camaro, 06-27-2020 03:09 PM
    • Replies: 0
    • Views: 80
    06-27-2020, 03:09 PM Go to last post
  23. Frustrating Intermittent Misfire

    Started by alan91z28, 06-10-2020 07:31 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 36
    • Views: 775
    06-26-2020, 01:59 PM Go to last post
  24. Hard surging shortly after fan turns on.

    Started by hofdoug, 06-19-2020 11:14 AM
    2 Pages
    1 2
    • Replies: 11
    • Views: 306
    06-25-2020, 02:56 PM Go to last post

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