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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: 22,995
    10-12-2010, 04:57 PM Go to last post
    • Replies: 0
    • Views: 24,068
    07-12-2010, 04:14 PM Go to last post
  1. HP EFI system won't run cold.

    Started by 79Firebirddave, Yesterday 09:53 AM
    • Replies: 4
    • Views: 96
    Yesterday, 11:45 PM Go to last post
  2. Car won't start, no RPM signal.

    Started by USN03GT, 04-27-2020 05:53 PM
    2 Pages
    1 2
    4.6l, wont start
    • Replies: 15
    • Views: 2,306
    Yesterday, 10:28 PM Go to last post
  3. Balancer options for crank trigger.

    Started by Waterlife, 05-12-2021 05:36 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 421
    05-15-2021, 03:04 AM Go to last post
  4. Battery Voltage at Idle?

    Started by Jart, 05-13-2021 07:31 PM
    • Replies: 8
    • Views: 208
    05-14-2021, 07:22 AM Go to last post
  5. Still no driveshaft sensor.

    Started by turbofreak, 03-03-2021 07:41 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 30
    • Views: 2,428
    05-13-2021, 06:57 PM Go to last post
  6. Dual IAC

    Started by James Taylor, 04-01-2017 02:19 AM
    3 Pages
    1 2 3
    • Replies: 20
    • Views: 7,184
    05-13-2021, 03:34 PM Go to last post
  7. Input Monitoring

    Started by masheim, 04-24-2021 07:53 PM
    • Replies: 3
    • Views: 393
    05-11-2021, 10:48 PM Go to last post
  8. HP ECU - No +5V Sensor Out

    Started by mip713, 06-08-2016 03:14 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 4,050
    05-11-2021, 05:03 PM Go to last post
  9. My HP will not communcate with my laptop.

    Started by Daz4Life, 05-09-2021 03:35 AM
    • Replies: 4
    • Views: 226
    05-11-2021, 03:21 PM Go to last post
    • Replies: 3
    • Views: 225
    05-11-2021, 01:22 PM Go to last post
  10. Questions for 550-601 Installation

    Started by Waterlife, 05-04-2021 12:48 AM
    • Replies: 9
    • Views: 498
    05-11-2021, 05:00 AM Go to last post
  11. Holley IAC Motor

    Started by Waterlife, 05-10-2021 04:17 PM
    • Replies: 3
    • Views: 150
    05-10-2021, 11:06 PM Go to last post
  12. Commander ECU with Terminator TB

    Started by tmoats, 05-03-2021 10:20 AM
    • Replies: 3
    • Views: 219
    05-05-2021, 02:04 PM Go to last post
  13. HP EFI worked fine last week, no spark this week.

    Started by 427bbc, 05-03-2021 02:01 AM
    • Replies: 4
    • Views: 268
    05-04-2021, 09:07 AM Go to last post
  14. IAC Position Issues

    Started by 90notch3, 05-02-2021 07:56 PM
    • Replies: 4
    • Views: 348
    05-03-2021, 03:45 PM Go to last post
  15. HP Wideband O2 Reading Rich?

    Started by LEJ1969, 05-03-2021 09:57 AM
    2x4, hp ecu, o2 sensor, terminator
    • Replies: 0
    • Views: 143
    05-03-2021, 09:57 AM Go to last post
  16. External 2-Step (via ignition box).

    Started by Cougar5.0, 04-27-2021 10:52 AM
    • Replies: 9
    • Views: 443
    05-02-2021, 08:10 PM Go to last post
  17. Seasonal Idle Fine Tuning

    Started by Qwktrip, 02-28-2020 01:47 AM
    7 Pages
    1 2 3 ... 7
    • Replies: 64
    • Views: 9,886
    05-01-2021, 06:58 PM Go to last post
  18. ECU datalogs being split up.

    Started by steve392, 05-01-2021 10:08 AM
    • Replies: 0
    • Views: 163
    05-01-2021, 10:08 AM Go to last post
  19. Broke My Laptop

    Started by mustang_al308, 04-30-2021 06:05 PM
    • Replies: 6
    • Views: 305
    05-01-2021, 09:12 AM Go to last post
  20. MAT Sensor

    Started by 416challenger@satx.rr.com, 04-28-2021 01:02 PM
    • Replies: 1
    • Views: 240
    04-28-2021, 02:27 PM Go to last post
  21. Hilborn TPS Sensor

    Started by AndyF, 04-20-2021 06:15 PM
    • Replies: 5
    • Views: 427
    04-27-2021, 08:40 AM Go to last post
  22. Communication Timeout

    Started by garymac72, 04-27-2015 01:17 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 6,109
    04-26-2021, 03:43 PM Go to last post
  23. Fuel Pump

    Started by tkrogel, 04-23-2021 12:55 PM
    • Replies: 4
    • Views: 394
    04-23-2021, 09:32 PM Go to last post
  24. Crankcase pressure/vacuum pump control.

    Started by INTMD8, 04-22-2021 08:43 PM
    • Replies: 1
    • Views: 329
    04-23-2021, 12:01 AM Go to last post

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