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Thread: Upgrading Terminator ECU

  1. #1

    Default Upgrading Terminator ECU

    In the product description on the Holley website it says,
    "Terminator ECU can be EASILY updated to Holley “HP” ECU specs with a free online software download.
    ECU can then be used for LSX, boosted, nitrous, and many other applications in the future as you desire!"
    How is that done? Also, are the pins in the ECU J1B (corrected), so that if pins and wires are added to the connector P2A to run DIS ignition, that LS1, LS2 style would be possible?
    Last edited by Corv412; 09-28-2013 at 07:28 AM.

  2. #2
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    Quote Originally Posted by Corv412 View Post
    How is that done?
    The Terminator EFI uses the same ECU as the Avenger/HP EFI, and it can be used as an HP EFI simply by connecting a laptop computer (USB cable).

    Software & Firmware Versions:
    Software: click "Help" tab (top toolbar) & "About Holley EFI".
    Firmware: click "Sync With ECU" & "Get ECU Info" (Key-on/USB connected).
    The latest software & firmware can be downloaded here:
    https://www.holley.com/support/resou...Fuel_Injection (Holley EFI Technical Library)
    http://documents.holley.com/techlibr...r10546rev1.pdf (HP & Dominator Quick Start Guide)
    http://documents.holley.com/techlibr...rmwarerev1.pdf (How To Update ECU Firmware)
    Before updating firmware, ensure the current Global Folder is saved somewhere, since it will be erased from the ECU.

    The latest V2 software can be downloaded here: https://www.holley.com/support/resou...Fuel_Injection
    Read the 199R10632rev5 PDF document for a "V2 Software Update Overview" (in "Holley EFI V2 Instructions").
    Be sure to successfully install the new V2 software, before installing the ECU firmware (read "V2 Update Instructions").
    Ensure the Holley EFI software is not open and the ECU is not powered on/connected when installing the new software.

    Also, are the pins in the ECU J2A, so that if pins and wires are added to the connector P2A to run DIS ignition, that LS1, LS2 style would be possible?
    The Terminator EFI uses a different main harness than the Avenger/HP EFI. So certain things, such as a knock sensor wire, needs to be added.

    EFI Software Help Information/Instructions:
    ‒ On the top Toolbar, click "Help" & "Contents". This opens all Help topics.
    ‒ When navigating the software, click "Help ?", drag it to any parameter and click again.
    ..This automatically opens the definitions for that specific parameter.
    ‒ Tuning information can be read by clicking the F1 key, when you're viewing any screen.
    http://documents.holley.com/techlibr...10555rev17.pdf (Holley EFI Wiring Manual)

    Click image for larger version. 

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    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  3. #3

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    The reason I ask about the pins in the J1B ICU socket is because the Terminator wiring schematic shows the pins B15,16,17,18, and B21,22,23,24, which are the EST out for DIS ignition, show as "unpopulated". Where as the HP schematic show the EST outs 1-8 with the corresponding cylinder. These are the pin-outs for the ECU, not the harness, and "unpopulated" in electronics usually means theres nothing in the pin hole.
    Back story, I'm wanting to run LS2 style ignition. But I would like to have the Terminator throttle body. I know I can run the DIS with an HP. But I can't find any documentation that proves I can with the Terminator. Buying the Terminator throttle body and the HP ECU separately would be prohibitively expensive. So if I need to settle for the HP system I will. But it wouldn't be a pleasant experience to get the Terminator system and then find out it won't support the DIS.
    Last edited by Corv412; 09-28-2013 at 07:29 AM.

  4. #4
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    Quote Originally Posted by Corv412 View Post
    Buying the Terminator throttle body and the HP ECU separately would be prohibitively expensive. So if I need to settle for the HP system I will.
    You don't understand...read the first sentence of my last post again.
    The Terminator EFI uses the same ECU as the Avenger/HP EFI; the only difference is the decal.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  5. #5

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    I do understand what you said, what I don't understand is what I see in the pin-out table (schematic was the wrong term previously), why they are different.
    This statement "Buying the Terminator throttle body and the HP ECU separately would be prohibitively expensive. So if I need to settle for the HP system I will." is simply anecdotal. I do appreciate your experience and wisdom, that's why I'm here. What I see are stark differences in pin-out tables that are suppose to represent the same thing. I can't help but ask why that is? Because as you say they are the same, so the ECU pin-outs should show to be the same, but they don't. The pin-out of the various harnesses are very different, but that's not what I'm looking at.

    Terminator EFI Installation Manual: https://documents.holley.com/199r10773.pdf page 20.
    HP EFI 4 BBL TBI Installation Manual: http://www.holley.com/data/Products/...9R10507rev.pdf page 14.

  6. #6
    Join Date
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    Quote Originally Posted by Corv412 View Post
    The pin-out of the various harnesses are very different, but that's not what I'm looking at.
    Yes it is. The Terminator ECU is the same as the Avenger/HP ECU. All the ECU pins are there.
    It's the Terminator EFI wire harness that's different; it doesn't have as many populated wires.
    That's what the Appendix 1.0 Pin-Out is referring to (even though it should be worded better).
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  7. #7

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    Quote Originally Posted by Corv412 View Post
    Terminator EFI Installation Manual: http://www.holley.com/data/Products/...R10653rev3.pdf page 20.
    Updating the link for the Terminator EFI Installation Manual: https://documents.holley.com/199r10773.pdf

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