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Thread: What should I choose?

  1. #1
    Join Date
    Jun 2015

    Default What should I choose?

    Can someone suggest what Holley EFI components would be suitable for my combination. I have a 540 BBC with a pair of 76mm turbos. This is going in a street/strip car. With a blow-through carburetor deal I was able to run premium pump fuel and 12 psi boost. I'd like do this with EFI. I'd like to go to a Coil-On-Plug deal to eliminate the distributor. I do not need any transmission control. What's needed to make an older school engine Coil-On-Plug?

  2. #2
    Join Date
    Dec 2009

    Default (BBC Related Forum Thread) (MAP kPa to Boost PSI Equivalents & Boost Control Information)

    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. (Holley EFI Coil-Near-Plug Ignition Components) (Holley EFI 556-128 Coil-Near-Plug Big Wire V8 Kit) (Holley EFI 558-117 Universal MPFI Coil-Near-Plug Main Harness) (Holley EFI 558-118 Ford Universal MPFI Coil-Near-Plug Main Harness) (Detailed Crank Trigger & CNP/DIS Conversion Information & Reasoning)

    Most people find this document very helpful: (Holley HP & Dominator EFI Component Selection Guide)
    With the Dominator EFI, everything is sold separately. Use Summit Racing's shopping cart for a total price.
    The HP ECU only has four Inputs & four Outputs. If you need more than that, you'll need the Dominator ECU: (Holley HP & Dominator ECU Differences)

    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. (Holley EFI Help/Instructions Overview) (Holley EFI Quick Start Guide) (Holley EFI Wiring Manual & Diagrams)! (Initial Checks & Adjustments - Read Steps #1-#6!)
    Open the Holley EFI software "Help" Contents ("Help" drop down menu), and read "Step-By-Step Beginners Tuning".
    Ensure the EFI software is set to run as an "Administrator" (right click for Properties/Advanced). Set it and forget it.
    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, 232°-244° duration/.623" lift/114° LSA camshaft, 11.8:1 comp, TFS R-Series FTI ported intake, BBK 80mm TB, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 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/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 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 MT tires.

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