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Thread: Terminator To MPFI

  1. #1

    Default Terminator To MPFI

    Has anyone made the factory Terminator harness work for MPFI by adding in the four injectors? And also looking for a wire diagram for the injectors harness that comes with the 550-606N kit. I may just make this harness the same as the HP EFI kit.

  2. #2
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    Quote Originally Posted by Fnfast88 View Post
    Has anyone made the factory Terminator harness work for MPFI by adding in the four injectors?
    Look at the wiring schematics in Section 13, Wiring Appendix:
    http://documents.holley.com/techlibr...10555rev17.pdf (Holley EFI Wiring Manual - Section 13, Wiring Appendix)
    https://forums.holley.com/showthread...r-ECU-Question (Additional Information)

    And also looking for a wire diagram for the injector harness that comes with the 550-606N kit.
    Look at the Pin Map, in the "View Injectors" tab.
    http://forums.holley.com/showthread....ith-Holley-EFI (Fuel Injector Wiring - Written for Ford engines, but applies to all engines.)
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  3. #3

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    That will work Danny. You are the man. I'm getting a Terminator EFI system at a good price and want to make it identical to the 550-606N on my other car, but I may keep the TBI for a bit. Just add in the I/O Auxiliary Harness, other four injectors and make my own TFI harness. Now to upgrade from V2 to V4 firmware. I couldn't get my HP EFI to do it. Had to take the ECU to Matt Bell at Redline Motorsports in Bloomington, Illinois. He had it done and back to me in no time. I can't believe how awesome these Holley EFI systems are. Why would anyone try anything else? Plus Danny, you're the man.

  4. #4
    Join Date
    Dec 2009
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    You're welcome, and thanks for the compliment.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

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