Holley TERMINATOR X MAX Quick Start Manual
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Holley TERMINATOR X MAX Quick Start Manual

Holley TERMINATOR X MAX Quick Start Manual

Mpfi fuel injection system
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MPFI FUEL INJECTION SYSTEM
QUICK START MANUAL – 199R11956
NOTE: These instructions must be read and fully understood before beginning installation. If this manual is not fully
understood, installation should not be attempted. Failure to follow these instructions, including the pictures may result
in subsequent system failure.
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Summary of Contents for Holley TERMINATOR X MAX

  • Page 1 MPFI FUEL INJECTION SYSTEM QUICK START MANUAL – 199R11956 NOTE: These instructions must be read and fully understood before beginning installation. If this manual is not fully understood, installation should not be attempted. Failure to follow these instructions, including the pictures may result in subsequent system failure.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS: 1.0 INTRODUCTION ..................................3 2.0 WARNINGS, NOTES, AND NOTICES ............................3 3.0 ADDITIONAL ITEMS REQUIRED FOR INSTALLATION ......................3 4.0 TOOLS REQUIRED FOR INSTALLATION ..........................4 5.0 REMOVAL OF EXISTING COMPONENTS ..........................4 6.0 TERMINATOR X MPFI SYSTEM INSTALLATION........................4 6.1 Fuel Pump, Fuel Line, and Filter Installation..........................

  • Page 3: Introduction

    1.0 INTRODUCTION Holley Performance Products has written this manual for the installation of the TERMINATOR X™ MPFI fuel injection system. This manual contains the information necessary for the installation of the hardware contained in this kit, which includes the ECU, wiring, and 3.5” touch screen.

  • Page 4: Tools Required For Installation

    All systems should contain a 10 micron post filter after the fuel pump. An EFI fuel pressure regulator is required. It should be installed after the fuel rail. See Figure 1 below for proper fuel system plumbing. Holley offers multiple fuel system kits. These kits contain all components except the return line. They include detailed instructions (downloadable at www.holley.com). Examples of these kits are: 526-1 –...

  • Page 5: Oxygen Sensor Mounting Procedure

    On vehicles equipped with an AIR pump, the oxygen sensor must be mounted before the AIR injection into the exhaust, or the AIR pump must be disconnected. Holley recommends that if the AIR is injected into both exhaust manifolds, mount the oxygen sensor into the pipe immediately after the exhaust manifold.

  • Page 6: Wiring Harness Installation

    ECU power and ground to the non-used terminals. Always use the fused power cable with the proper connectors supplied by Holley only. Don’t connect to the ECU until after ALL wiring and installation is performed.

  • Page 7: Ecu Connectors

    If the ECU is mounted in the interior, it will have to be routed through the firewall into the engine compartment. Use a 2” hole saw to create a hole in a desired location if no other point of access is available. Use a grommet for a 2” hole to seal this area. Holley recommends Earl’s part number 29G001ERL...

  • Page 8: Oil Pressure Sensor

    [Required] Connect to the oxygen sensor previously installed. There is an adapter harness included in the kit which allows the Bosch 4.9 sensor to plug into the main engine harness. If you need an extension cable, one is available from Holley (P/N 534-199). The TERMINATOR X™...

  • Page 9: Manifold Air Temperature (Mat)

    Ford TFI Computer Controlled Distributor Ford TFI Computer Controlled Distributor w/ CD Box MSD Pro-Billet Distributor w/ CD Box Holley EFI Dual Sync Distributor w/ CD Box Holley Sniper EFI HyperSpark Distributor w/ CD Box NOTE: For GEN 3 HEMI applications using a 558-116 harness you MUST use a Chrysler 514-9230-AA crank sensor. This sensor MUST be used when utilizing a 60-2 Ignition Strategy.

  • Page 10: Knock Sensors

    Note: The max manifold pressure supported by the handheld base calibrations is 250 kPa (21.6 psi boost). Note: The following plug and play MAP adapter harnesses are available: MPFI to Holley SS MAP Adapter Harness – 558-466 LS1/2 to Holley SS MAP Adapter Harness – 558-467 LS1/2 to LS3 MAP Adapter Harness –...

  • Page 11: Throttle Position Sensor (Tps)

    NOTE: There are multiple styles of injector connectors. An overview of these various connector styles can be found in Appendix 2.0 of the full Terminator X instruction manual found on www.holley.com. If the harness supplied in your kit does not match what your engine has, please contact Holley Tech Service.

  • Page 12: Ignition Coils

    9.3.13 Ignition Coils [Not present on all harnesses] Connect the coil connectors into each bank of coils. The driver side connector should be labeled “DIS CONNECTOR ODD” or have the corresponding cylinder numbers. The passenger side connector should be labeled “DIS CONNECTOR EVEN”...

  • Page 13: Loose Wires

    10.0 LOOSE WIRES Figure 26 The following loose wires in the main wiring harness should be connected as follows on all systems. [Required] 12V Switched – Color = Red/White – Should be connected to a clean +12 volt power source. Power source should only be active when the ignition is on.

  • Page 14: Transmission Harness

    Turbine Speed Sensor – The 4L60E does not have a turbine speed sensor. It is located towards the front driver’s side on a 4L80E. Note that a 4L70E has one internally wired, but is not connected to the Holley harness. The turbine speed sensor is not used for any...
  • Page 15 Loose Wires Brake Switch (Grey) – Wired to the brake light switch. This must be installed to a +12v source (This wire must see +12V when brakes are applied). This input is used to unlock the torque converter when the brakes are applied. Ground (Black) –...

  • Page 16: Ford Transmission Wiring

    Pressure Transducer (optional) – The harness is supplied with a prewired pressure transducer connector. This can be used to monitor transmission line pressure if desired. The input will need to be configured for the sensor used in the I/O and then mapped to J4-B21. A Holley 0-500psi sensor (554-136) is recommended. Loose Wires Brake Switch (brown/white) –...

  • Page 17: Drive-By-Wire Harness

    13.4 System Safeties Holley designed the drive-by-wire system to utilize a brake pedal switch input. This is wired to a +12v input from the brake pedal switch. If the brake pedal is depressed enough to activate the brake light switch, the following occurs: The ECU will not allow a throttle position over 10%, no matter how far the pedal is pushed.

  • Page 18: Throttle Body "Limp Home" Position

    Most drive-by-wire systems are designed so there are two position sensors on both the throttle body and the accelerator pedal assembly. This is done as a failsafe in the event that one of the position sensors should fail. Holley EFI systems require that both sets of sensors are functioning 100% properly.

  • Page 19: Ford Dbw Wiring

    This was used up to approximately 2007 in the car applications. Some earlier truck applications have different connectors and the DBW actuators have not been tested and are therefore not approved for use with a Holley ECU.

  • Page 20: Initial Power-Up

    16.0 INITIAL POWER-UP Turn the ignition key to the “run” position. This should apply power to the ECU as well as the TERMINATOR X™ Handheld control module. The handheld should power up and the Home Screen (Figure 37) should appear. The Home screen contains icons which will navigate to different functional features of the 3.5 Touch Screen.

  • Page 21: Home Screen

    Figure 40 – On Screen Prompts Figure 41 – Graph Figure 42 – Edit Options Digitally: Selecting this option enables slider bar adjustment of individual data points on the graph or the entire curve. Graphically: Selecting this option enables single point or whole curve adjustment. A stylus may be used to select and drag data on the graph screen.
  • Page 22 Choose the GCF Wizard icon. Choose MPFI (Multi Port Fuel Injection) as the system type. Choose proper system type if listed, otherwise choose “Universal”. Choose the number of cylinders - 4, 6, & 8 are options. Choose the correct firing order. Use the scroll bar on the right to view all options.
  • Page 23 • Ford TFI 8 Cylinder Sequential Sniper HyperSpark Distributors • • Holley Dual Sync Distributor Magnetic Pickup Distributor • Tip: The kit & engine harness you purchased must match your application. *Terminator X does NOT control ignition timing **Connected to Tach Output on CD Box or 4 wire RTR Distributors, Terminator X does NOT control...
  • Page 24 Choose the appropriate fuel pressure. Choose your brand/manufacturer of injector. Each grouping contains a list of part numbers that are supported with the Terminator X system. Choose the part number of injector that matches what is installed in your engine. Tip: For proper operation, it is critical that the correct injector part number is selected Tip: Injector data can be entered and modified via Terminator X software if your injectors are not listed.
  • Page 25 If a Turbo or Supercharger was chosen, use the slider bar to set desired AFR offset per 7 pounds of boost. Breakpoints of 7, 14 & 21 PSI are shown for reference Choose throttle body type (Terminator X Max only) Select No if you are using a cable operated throttle body...
  • Page 26 If using a cable operated throttle body, choose IAC type. If you will be using the Terminator X system to control an electronic transmission (Terminator X Max only), choose Yes. Choose no if you have an older non-electronic transmission (i.e. TH350, TH400, 700R-4, etc.) OR if you are using a separate standalone controller for your previously installed...

  • Page 27: Tps Autoset

    Select the Start button to upload the custom Terminator X calibration to your ECU. Congratulations, you have completed the setup Wizard! It is now time to perform a TPS Autoset 20.0 TPS AUTOSET After completing the calibration wizard, the next step is to perform a “TPS Autoset”. This must be done on a brand new system otherwise the injectors and ignition will not be fired by the ECU.

  • Page 28: Sensor Verification

    RPM signal. The engine should fire and run and come to an idle. If you do not get an RPM signal, there is an error in the wiring or system setup. Call Holley Tech service for advice.

  • Page 29: Idle Setting/Cable Operated Throttle Plate Setting

    At this point you can drive and enjoy your TERMINATOR X™ EFI as it is. The full instruction and tuning manual can be found on the product pages of www.holley.com and describes in detail how you can adjust various parameters to further optimize fuel...

  • Page 30: Ignition Wiring Diagrams

    26.0 IGNITION WIRING DIAGRAMS “Coil -” Engine Speed Input - Terminator X NOT Controlling Ignition Timing Use this if: • You are using a stock type mechanical advance distributor with a stock inductive ignition coil. Examples of this would be any older style points distributor, a 1974-1981 GM large cap HEI.
  • Page 31 MSD Ready-To-Run Distributor- Terminator X NOT Controlling Ignition Timing Must Purchase Holley Part Number 558-302. The loose end of the YELLOW/BLACK wire will then be terminated to the tach •...
  • Page 32 GM Small Cap HEI Computer Controlled Distributor – Terminator X Controlling Ignition Timing (Requires Holley Ignition Adapter PN 558-304) Small and Big Block Chevy engines can use a small cap GM HEI computer controlled distributor that was available on factory GM •...
  • Page 33 Ford TFI Computer Controlled Distributor – Terminator X Controlling Ignition Timing (Requires Holley Ignition Adapter PN 558-305) • Ford Sequentially Injected 5.0-5.8L engines from 1987-1995 used this distributor. This option will allow the EFI to control the ignition timing. Ford TFI Computer Controlled Distributor w/ Capacitive Discharge Box – Terminator X Controlling Ignition Timing...
  • Page 34 MSD Pro-Billet Distributor w/ Capacitive Discharge Box – Terminator X Controlling Ignition Timing (Requires Holley Ignition Adapter PN 558-325)
  • Page 35 Holley EFI Dual Sync Distributor w/ Capacitive Discharge Box – Terminator X Controlling Ignition Timing...
  • Page 36 Holley Sniper EFI HyperSpark Distributor w/ Capacitive Discharge Box – Terminator X Controlling Ignition Timing (Requires Holley Ignition Adapter PN 558-323)

  • Page 37: Diagnostic Led's

    27.0 DIAGNOSTIC LED’S...

  • Page 38: Revision Date

    Green – Fuel Pump Circuit 12V+ Orange – 5V Sensor Reference Black/White – Sensor Ground Black – Chassis Ground Holley Technical Support: 1-866-464-6553 © 2025 Holley Performance Products, Inc. All rights reserved. Tous Droits Réservés. 199R11956 FRM35765 Revision Date: 1-14-25...

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Terminator x

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