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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: 17,359
    10-12-2010, 04:57 PM Go to last post
    • Replies: 0
    • Views: 18,296
    07-12-2010, 04:14 PM Go to last post
  1. Multi-Port Sequential Coil-On-Plug

    Started by diehrd, 06-16-2020 07:16 AM
    2 Pages
    1 2
    • Replies: 12
    • Views: 469
    06-29-2020, 10:40 AM Go to last post
  2. Initial Startup Problem

    Started by ScottChab, 06-28-2020 09:44 PM
    • Replies: 2
    • Views: 103
    06-29-2020, 09:16 AM Go to last post
  3. Post Holley 870021 Questions

    Started by graderbird2004, 06-29-2020 05:46 AM
    map, tech service, tech support
    • Replies: 0
    • Views: 52
    06-29-2020, 05:46 AM Go to last post
  4. 554-115 Peak & Hold Driver

    Started by Corvus Camaro, 06-27-2020 03:09 PM
    • Replies: 0
    • Views: 88
    06-27-2020, 03:09 PM Go to last post
  5. Frustrating Intermittent Misfire

    Started by alan91z28, 06-10-2020 07:31 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 36
    • Views: 825
    06-26-2020, 01:59 PM Go to last post
  6. Hard surging shortly after fan turns on.

    Started by hofdoug, 06-19-2020 11:14 AM
    2 Pages
    1 2
    • Replies: 11
    • Views: 338
    06-25-2020, 02:56 PM Go to last post
  7. Unhappy Injectors won't spray.

    Started by rileycory795, 06-25-2020 12:59 PM
    • Replies: 2
    • Views: 93
    06-25-2020, 01:38 PM Go to last post
  8. HP EFI Fan Outputs

    Started by monaroman, 08-07-2015 10:21 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 34
    • Views: 14,166
    06-25-2020, 12:51 PM Go to last post
  9. Arrow RPM problem with the cooling conditioner.

    Started by naif, 06-25-2020 08:41 AM
    • Replies: 0
    • Views: 66
    06-25-2020, 08:41 AM Go to last post
  10. Unhappy Update Firmware

    Started by naif, 06-22-2020 07:07 AM
    • Replies: 2
    • Views: 155
    06-25-2020, 08:27 AM Go to last post
  11. Dual Sync Distributor

    Started by rileycory795, 06-24-2020 01:47 PM
    • Replies: 1
    • Views: 83
    06-24-2020, 02:06 PM Go to last post
  12. Losing fuel pressure with RPM.

    Started by 1320 Bowtie, 06-23-2020 08:26 PM
    • Replies: 3
    • Views: 138
    06-24-2020, 11:30 AM Go to last post
  13. SBF Surging After Holley Dual Sync Install

    Started by sealevel, 06-22-2020 12:07 PM
    • Replies: 7
    • Views: 192
    06-22-2020, 03:37 PM Go to last post
  14. Boost Solenoid Wired PWM+

    Started by 04turbogt, 06-21-2020 08:44 AM
    • Replies: 3
    • Views: 111
    06-21-2020, 09:17 AM Go to last post
  15. E85 & Target AFR?

    Started by 3forty7, 05-15-2020 09:42 PM
    2 Pages
    1 2
    • Replies: 10
    • Views: 604
    06-20-2020, 02:16 PM Go to last post
  16. Starter & clutch safety switch question.

    Started by ScottChab, 06-19-2020 08:18 PM
    • Replies: 3
    • Views: 126
    06-20-2020, 12:21 AM Go to last post
  17. Tach Works But Coil Doesn't

    Started by c5rider, 06-12-2020 07:49 AM
    2 Pages
    1 2
    • Replies: 10
    • Views: 432
    06-18-2020, 01:50 AM Go to last post
  18. Stealth Ram Fuel Pressure Sensor Location?

    Started by BillW, 06-13-2020 06:08 PM
    • Replies: 8
    • Views: 236
    06-15-2020, 02:07 PM Go to last post
  19. Slight Flutter at Cruising Speed

    Started by dynosore, 05-18-2020 09:24 AM
    2 Pages
    1 2
    • Replies: 19
    • Views: 858
    06-14-2020, 03:30 AM Go to last post
  20. CL COMP Percent

    Started by cstmwgn, 01-09-2015 04:32 PM
    • Replies: 7
    • Views: 4,245
    06-13-2020, 06:42 PM Go to last post
  21. Graphic Issues

    Started by BuaAuto, 05-25-2020 09:24 PM
    • Replies: 2
    • Views: 198
    06-11-2020, 03:20 PM Go to last post
  22. Post Z Car Setup

    Started by Johnz, 06-11-2020 02:00 PM
    • Replies: 1
    • Views: 103
    06-11-2020, 02:16 PM Go to last post
  23. Need a long USB cable.

    Started by jeff@califon, 06-10-2020 01:36 PM
    • Replies: 5
    • Views: 181
    06-10-2020, 04:57 PM Go to last post
  24. V5 freezing when Online.

    Started by 90notch3, 03-30-2020 03:00 PM
    3 Pages
    1 2 3
    • Replies: 23
    • Views: 1,511
    06-10-2020, 09:59 AM Go to last post
  25. What are all parameters that trigger IAC Ramp Down?

    Started by Qwktrip, 05-24-2020 08:57 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 752
    06-07-2020, 07:04 AM Go to last post

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