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Thread: EFI HP & Digital Dash

  1. #1

    Default EFI HP & Digital Dash

    OK so first off I'm new to this obviously. I have a '94 Mustang with a 363" Turbo (Fun Street Car/Show Car), transmission is not electronically controlled. I'm going to run the HP EFI. A few questions I have that I've got confused on. I'm trying to retain factory A/C in this car, plus the electric fans (can be only one speed, that doesn't matter to me), also has a transbrake installed, will be running a boost controller, really thinking about Coil-On-Plug. So in short, I'd like to run as follows:
    A/C with fans.
    Boost Controller (Whatever is preferred.)
    Transbrake
    COP/CNP
    Trans Temp and maybe transmission cooler fan. Can use a separate controller if I had too.
    Speed Sensor for MPH
    Fuel Level
    I will also be using the Digital Dash, if I install temp gauges, etc., do they tie up inputs/outputs or can I wire them directly into the dash? Will all this work with the HP unit, or have I exceeded the inputs/outputs? Thanks for any advice!

  2. #2
    Join Date
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    Default

    Quote Originally Posted by Mustang89 View Post
    A/C with fans.
    These are a lot of questions, please also search the forum.
    See Note #5: https://forums.holley.com/showthread...464#post100464 (Related Fox Mustang/Holley EFI Forum Post)
    https://forums.holley.com/showthread...Fan-Holley-EFI (Wiring an Electric Cooling Fan - Holley EFI)

    Boost Controller (Whatever is preferred.)
    http://forums.holley.com/showthread....SI-Equivalents (MAP kPa to Boost PSI Equivalents & Boost Control Information)

    Transbrake
    http://forums.holley.com/showthread....9883#post79883 (Transbrake Input Protection Module Information)

    COP/CNP
    Originally Posted by Danny Cabral
    If you already have or you're purchasing a new Holley EFI non-LSx main harness:
    The Holley 558-307 CNP main harness is for Holley's Coil-On-Plug smart coils and LSx ignition coils (nine terminated loose wires into J1B).
    If using Holley's 556-112 CNP coils, the Holley 558-318 CNP coil sub-harness is also required (or the Holley 556-128 CNP Big Wire V8 Kit).
    For LSx coils, Holley 558-307 CNP main harness plugs into two GM 12579355 CNP sub-harnesses or Holley 558-321 LSx coil sub-harnesses.
    If you had a Holley EFI LSx main harness, you wouldn't need the Holley 558-307 CNP main harness or the 558-318 CNP coil sub-harness.
    https://www.holley.com/products/igni...nd_components/ (Holley EFI Coil-Near-Plug Ignition Components)
    https://www.holley.com/products/igni.../parts/556-128 (Holley EFI 556-128 Coil-Near-Plug Big Wire V8 Kit)
    https://www.holley.com/products/fuel.../parts/558-117 (Holley EFI 558-117 Universal MPFI Coil-Near-Plug Main Harness)
    https://www.holley.com/products/fuel.../parts/558-118 (Holley EFI 558-118 Ford Universal MPFI Coil-Near-Plug Main Harness)
    https://forums.holley.com/showthread...3038#post33038 (Detailed Crank Trigger & CNP/DIS Conversion Information & Reasoning)

    Trans Temp and maybe transmission cooler fan. Can use a separate controller if I had too.
    https://forums.holley.com/showthread...ture-ECU-Input (Transmission Temperature ECU Input)

    Speed Sensor for MPH
    http://forums.holley.com/showthread....ith-Holley-EFI (Installing A VSS Sensor)

    Fuel Level
    https://forums.holley.com/showthread...8310#post88310 (Related Forum Thread)

    I will also be using the Digital Dash, if I install temp gauges, etc., do they tie up inputs/outputs or can I wire them directly into the dash?
    The Digital Dash has its own I/O.
    http://documents.holley.com/199r10746rev1.pdf (Holley 553-106 Digital Dash Instruction Manual)
    http://documents.holley.com/199r10954rev2.pdf (Holley 558-432 Digital Dash I/O Adapter Instructions)

    Will all this work with the HP unit, or have I exceeded the inputs/outputs?
    The HP ECU only has four Inputs & four Outputs. If you need more than that, you'll need the Dominator ECU:
    http://documents.holley.com/techlibr...useanddiff.pdf (Holley HP & Dominator ECU Differences)
    With the Dominator EFI, everything is sold separately. Use Summit Racing's shopping cart for a total price.
    Most people find this document very helpful:
    http://documents.holley.com/efi_sele...chart62914.pdf (Holley HP & Dominator EFI Component Selection Guide)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, 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.

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