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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: 17,196
    10-12-2010, 04:57 PM Go to last post
    • Replies: 0
    • Views: 18,120
    07-12-2010, 04:14 PM Go to last post
  1. Rev Limiter & Line Lock with stick car.

    Started by jb427, 06-26-2020 04:15 PM
    • Replies: 2
    • Views: 99
    Today, 01:03 AM Go to last post
  2. ECU Failure

    Started by Mike E, Yesterday 11:16 PM
    • Replies: 3
    • Views: 20
    Today, 12:15 AM Go to last post
  3. Seasonal Idle Fine Tuning

    Started by Qwktrip, 02-28-2020 01:47 AM
    7 Pages
    1 2 3 ... 7
    • Replies: 62
    • Views: 4,169
    Yesterday, 11:48 PM Go to last post
  4. No Start

    Started by 3DTim, 06-30-2020 08:45 PM
    • Replies: 6
    • Views: 67
    Yesterday, 07:08 PM Go to last post
  5. Dash to ECU communication problem.

    Started by speedphreake, Yesterday 01:30 PM
    • Replies: 1
    • Views: 39
    Yesterday, 03:37 PM Go to last post
  6. Can't connect USB, no communication.

    Started by Ken Rainwater, 06-29-2020 08:34 AM
    2 Pages
    1 2
    • Replies: 12
    • Views: 125
    Yesterday, 10:57 AM Go to last post
  7. Smile Spark table for my Ford '69 HP EFI engine.

    Started by MUST.SWEDE, 06-18-2020 12:47 PM
    3 Pages
    1 2 3
    • Replies: 25
    • Views: 756
    06-30-2020, 05:20 PM Go to last post
  8. Fine tuning idle using a datalog.

    Started by Laveyman, 06-29-2020 02:43 PM
    2 Pages
    1 2
    • Replies: 12
    • Views: 129
    06-30-2020, 02:58 PM Go to last post
  9. Diode Wiring

    Started by jb427, 06-29-2020 01:43 PM
    • Replies: 4
    • Views: 54
    06-29-2020, 07:23 PM Go to last post
  10. "Get From ECU" now no fuel pump prime.

    Started by Laveyman, 06-21-2020 11:29 AM
    2 Pages
    1 2
    • Replies: 10
    • Views: 204
    06-29-2020, 12:45 PM Go to last post
  11. Tach doesn't read properly above 3500.

    Started by LB9GTA, 06-29-2020 08:51 AM
    • Replies: 2
    • Views: 35
    06-29-2020, 11:45 AM Go to last post
  12. Multi-Port Sequential Coil-On-Plug

    Started by diehrd, 06-16-2020 07:16 AM
    2 Pages
    1 2
    • Replies: 12
    • Views: 366
    06-29-2020, 10:40 AM Go to last post
  13. Initial Startup Problem

    Started by ScottChab, 06-28-2020 09:44 PM
    • Replies: 2
    • Views: 52
    06-29-2020, 09:16 AM Go to last post
  14. Post Holley 870021 Questions

    Started by graderbird2004, 06-29-2020 05:46 AM
    map, tech service, tech support
    • Replies: 0
    • Views: 31
    06-29-2020, 05:46 AM Go to last post
  15. 554-115 Peak & Hold Driver

    Started by Corvus Camaro, 06-27-2020 03:09 PM
    • Replies: 0
    • Views: 62
    06-27-2020, 03:09 PM Go to last post
  16. Frustrating Intermittent Misfire

    Started by alan91z28, 06-10-2020 07:31 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 36
    • Views: 679
    06-26-2020, 01:59 PM Go to last post
  17. Injector End Angle Tuning

    Started by 81 TransAm, 09-15-2017 10:01 PM
    11 Pages
    1 2 3 ... 11
    • Replies: 103
    • Views: 24,901
    06-25-2020, 05:07 PM Go to last post
  18. Hard surging shortly after fan turns on.

    Started by hofdoug, 06-19-2020 11:14 AM
    2 Pages
    1 2
    • Replies: 11
    • Views: 246
    06-25-2020, 02:56 PM Go to last post
  19. Unhappy Injectors won't spray.

    Started by rileycory795, 06-25-2020 12:59 PM
    • Replies: 2
    • Views: 49
    06-25-2020, 01:38 PM Go to last post
  20. HP EFI Fan Outputs

    Started by monaroman, 08-07-2015 10:21 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 34
    • Views: 13,936
    06-25-2020, 12:51 PM Go to last post
  21. Arrow RPM problem with the cooling conditioner.

    Started by naif, 06-25-2020 08:41 AM
    • Replies: 0
    • Views: 39
    06-25-2020, 08:41 AM Go to last post
  22. Unhappy Update Firmware

    Started by naif, 06-22-2020 07:07 AM
    • Replies: 2
    • Views: 115
    06-25-2020, 08:27 AM Go to last post
  23. Dual Sync Distributor

    Started by rileycory795, 06-24-2020 01:47 PM
    • Replies: 1
    • Views: 56
    06-24-2020, 02:06 PM Go to last post
  24. Losing fuel pressure with RPM.

    Started by 1320 Bowtie, 06-23-2020 08:26 PM
    • Replies: 3
    • Views: 89
    06-24-2020, 11:30 AM Go to last post
  25. SBF Surging After Holley Dual Sync Install

    Started by sealevel, 06-22-2020 12:07 PM
    • Replies: 7
    • Views: 130
    06-22-2020, 03:37 PM Go to last post

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