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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: 13,986
    10-12-2010, 04:57 PM Go to last post
    • Replies: 0
    • Views: 14,670
    07-12-2010, 04:14 PM Go to last post
  1. Testing Boost Control With Shop Air

    Started by Five O, 02-28-2017 11:15 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 2,430
    Yesterday, 07:48 PM Go to last post
  2. How do I see GPS speed from Pro Dash on HP?

    Started by speedphreake, 08-14-2019 06:33 PM
    • Replies: 6
    • Views: 281
    08-16-2019, 08:09 PM Go to last post
    • Replies: 7
    • Views: 245
    08-16-2019, 07:56 PM Go to last post
  3. Holley Water/Meth System Issues

    Started by 1985351, 08-15-2019 09:07 AM
    • Replies: 0
    • Views: 79
    08-15-2019, 09:07 AM Go to last post
  4. Injector Off Time

    Started by George F, 08-14-2019 04:38 PM
    • Replies: 1
    • Views: 72
    08-14-2019, 05:20 PM Go to last post
  5. Open headers & WBO2 sensor.

    Started by hutchenc, 08-12-2019 02:31 AM
    • Replies: 4
    • Views: 252
    08-12-2019, 11:10 PM Go to last post
  6. Possible problem with cam & crank signal.

    Started by outlawstang88, 08-12-2019 10:09 PM
    • Replies: 0
    • Views: 61
    08-12-2019, 10:09 PM Go to last post
  7. Holley LS turbo tuning issue.

    Started by Molonlabemike, 08-11-2019 03:09 PM
    • Replies: 2
    • Views: 120
    08-12-2019, 04:42 PM Go to last post
    • Replies: 3
    • Views: 86
    08-12-2019, 02:19 PM Go to last post
  8. Cruising oscillations at light load tip-in.

    Started by Cougar5.0, 08-09-2019 09:12 PM
    • Replies: 9
    • Views: 186
    08-10-2019, 07:27 PM Go to last post
  9. PWM Electric Fan Control (Again)

    Started by racindego, 07-31-2019 03:46 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 479
    08-10-2019, 11:08 AM Go to last post
  10. Single Solenoid Boost Control

    Started by jroypdx, 08-09-2019 12:25 PM
    • Replies: 0
    • Views: 85
    08-09-2019, 12:25 PM Go to last post
  11. Fuel Pressure Drop

    Started by cobracoop, 09-01-2018 03:04 PM
    2 Pages
    1 2
    • Replies: 11
    • Views: 791
    08-07-2019, 04:34 PM Go to last post
  12. 58x To 24x

    Started by Foxracer52, 08-06-2019 07:45 AM
    • Replies: 2
    • Views: 115
    08-07-2019, 08:09 AM Go to last post
  13. 558-304 GM HEI adapter harness.

    Started by hutchenc, 08-04-2019 01:12 PM
    • Replies: 3
    • Views: 84
    08-04-2019, 01:51 PM Go to last post
  14. Idle/RPM error only at operating temp.

    Started by Ryan77, 06-17-2019 08:31 PM
    • Replies: 7
    • Views: 289
    08-01-2019, 02:05 AM Go to last post
  15. Fuel Pressure

    Started by 5o2slow, 07-16-2019 06:33 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 631
    07-31-2019, 11:25 AM Go to last post
    • Replies: 1
    • Views: 114
    07-30-2019, 11:49 AM Go to last post
  16. Question Idle Timing

    Started by paddyrk, 07-29-2019 09:50 PM
    • Replies: 1
    • Views: 220
    07-30-2019, 04:01 AM Go to last post
  17. Goes out of Closed Loop for a before shift RPM under WOT.

    Started by turboslowbra, 07-21-2019 07:11 PM
    2 Pages
    1 2
    • Replies: 10
    • Views: 334
    07-29-2019, 08:34 PM Go to last post
  18. Injector Off Time

    Started by jimbo72, 07-29-2019 09:01 AM
    • Replies: 4
    • Views: 136
    07-29-2019, 05:32 PM Go to last post
    • Replies: 2
    • Views: 175
    07-28-2019, 05:52 PM Go to last post
    • Replies: 4
    • Views: 409
    07-28-2019, 02:45 PM Go to last post
    • Replies: 35
    • Views: 1,153
    07-28-2019, 02:43 PM Go to last post
  19. V5 EFI software update to old ECU?

    Started by Pacha, 07-24-2019 02:40 PM
    • Replies: 4
    • Views: 238
    07-28-2019, 09:53 AM Go to last post

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