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550-442 EFI Throttle Body w/ GM Trans Control - Polished
550-443 EFI Throttle Body w/ GM Trans Control – Hard Core Gray
550-445 EFI Throttle Body w/ GM Trans Control – Classic Gold Finish
FUEL INJECTION INSTALLATION MANUAL
Read this manual before using this product.
WARNING!
This instruction manual must be read and fully understood before beginning installation. If the instructions are not fully
understood, installation should not be attempted. Failure to follow the instructions may result in subsequent system failure and
could result in serious personal injury and/or property damage. Keep this manual.
For the safety and protection of you and others as well as your vehicle, only a trained mechanic having adequate fuel system
experience should perform the installation, adjustment, and repair.
While undertaking any work involving the fuel system, it is particularly important to remember one of the very basic principles of
safety: fuel vapors are heavier than air and tend to collect in low places where an explosive fuel/air mixture may be ignited by
any spark or flame resulting in property damage, personal injury, and/or death. Extreme caution must be exercised to prevent
spillage and thus eliminate the formation of such fuel vapors. All work involving this product and the fuel system generally
MUST be performed in a well-ventilated area. Do NOT smoke or have an open flame present near gasoline vapors or an
explosion may result.
Any components damaged due to failure to follow these instructions will not be covered by the warranty. Failure of any one
component does not constitute, nor does it justify, warranty of the complete system. Individual service items are available for
replacement of components. If assistance is required or if you need further warranty clarification, please call Holley Technical
Service at 1 (270) 781-9741 or (866) 464-6553.
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Table of Contents
Related Manuals for Holley 550-442
Summarization of Contents
1.0 INTRODUCTION & SYSTEM REQUIREMENTS
1.1 Engine Requirements
Details the necessary engine specifications for installation compatibility.
1.2 Fuel System Requirements
Outlines the fuel system specifications needed for the EFI system.
4.0 OXYGEN SENSOR INSTALLATION
Clamp-On Oxygen Sensor Bung Installation
Details the optional method for installing an O2 sensor using a clamp-on bung.
6.0 THROTTLE BODY & CABLE BRACKET INSTALLATION
6.1 Throttle Connections
Explains how to connect the throttle linkage for smooth and proper operation.
9.0 WIRING HARNESS INSTALLATION
9.1 Harness Routing
Guides on routing the wiring harness through the vehicle firewall and engine compartment.
9.2 Sensor Connections & Loose Wires
Connects various sensors and loose wires to the ECU for system operation.
10.0 IGNITION WIRING
OPTION 1: "Coil -" engine speed input
Connects to the coil negative terminal for engine speed signal input.
OPTION 2: “Tach Out" engine speed input
Utilizes the tachometer output from the ignition system for engine speed.
OPTION 3: “GM Small Cap HEI" Computer Controlled Distributor
Connects to GM HEI distributors for ECU control of ignition timing.
OPTION 4: "Ford TFI" Computer Controlled Distributor
Connects to Ford TFI distributors for ECU control of ignition timing.
16.0 HANDHELD NAVIGATION & USE
16.1 Making Adjustments
Details methods for adjusting parameters using the handheld.
20.0 TRANSMISSION SETUP
20.1 Transmission Configuration
Sets up drivetrain parameters like tire diameter and gear ratio for transmissions.
27.0 GAUGE SCREENS
27.1 Monitor Screen Access
Accesses live telemetry and customizable gauge screen options from the Home screen.
27.1.1 Multi-Gauge Display Options
Displays multiple sensor readings and engine data in a consolidated view.
27.1.2 Monitor Screen Categories
Provides specific monitor screens for various engine parameters like Idle, Learn, and Sensors.
27.1.3 Diagnostics Screen
Displays diagnostic information for various sensors and system status.
28.0 CUSTOM SETUP CONFIGURATION
28.1 Dash Setup Configuration
Configures custom gauge layouts (Dash #1, #2, #3) on the touchscreen display.
28.2 Channels Scaling and Limits
Configures caution and warning indicators for display channels with scaling.
29.0 FILE SAVING AND LOADING
29.1 File Management
Accesses ECU information, data logging, and global folder transfer menus.
29.1.1 ECU Overview Information
Displays current engine and ECU configuration details such as firmware version.
29.1.2 ECU Global Files
Manages global calibration files saved to the SD card for transfer and backup.
29.1.3 ECU Data Logging Capabilities
Details the capabilities for logging engine data for performance analysis and tuning.
29.1.4 ECU Hardware/Firmware (HW/FW)
Shows ECU serial number, firmware version, and options for upgrading firmware.
29.1.5 Local Setup Options
Provides calibration options for the handheld device, including touch and local settings.
29.1.5A Touch Screen Calibration
Recalibrates the touchscreen for accurate input and responsiveness.
29.1.5B Local System Information
Displays device and firmware information for the 3.5" handheld.
29.1.5C Local System Options
Configures handheld startup behavior and restores last used screen.
30.0 BASIC TUNING INTRODUCTION
Basic Fuel Tuning
Adjusts target air/fuel ratios at idle, cruise, and wide-open throttle.
Fuel Learn Status Control
Enables or disables the self-tuning feature for automatic calibration of the engine.
Basic Idle Speed Adjustment
Adjusts the target hot engine idle speed for desired RPM and smooth operation.
Spark Timing Configuration
Adjusts ignition timing parameters for idle, cruise, and wide-open throttle.
Transmission Parameter Tuning
Configures transmission shift points, TCC, and line pressure for optimal shifting.
WOT Shift Point Configuration
Sets up full throttle upshift points for each gear based on RPM.
Torque Converter Clutch (TCC) Parameters
Tunes TCC activation and deactivation settings for clutch engagement.
Torque Converter Clutch (TCC) Lock/Unlock Speed
Adjusts TCC lockup based on vehicle speed for efficient driving.
Transmission Line Pressure Control
Adjusts line pressure based on TPS or MAP for each gear to manage transmission engagement.
31.0 SYSTEM SETUP AND CONFIGURATION
System Tuning Options
Navigates to system tuning options for outputs, engine, ignition, and transmission.
Output Control Adjustments
Adjusts fan ON/OFF temperatures and AC shutdown settings.
Engine Setup Configuration
Configures engine parameters like injector flow rating and fuel pressure.
Ignition Setup Configuration
Configures ignition input type and sets the engine rev limiter.
32.0 ADVANCED TUNING
Advanced Fuel Tuning
Fine-tunes fuel enrichment, load, cranking, and afterstart fuel for optimal combustion.
Closed Loop Operation Adjustments
Adjusts parameters for closed-loop fuel control operation based on O2 sensor readings.
Advanced Learn Compensation Limits
Modifies learn compensation limits for self-tuning accuracy.
Advanced Idle Control Functions
Adjusts idle air control motor functions for engine decel and startup behavior.
IAC Speed Configuration
Selects IAC motor application type for optimized background parameters.
IAC Startup Behavior Settings
Controls IAC position during cranking and immediately after startup.
Idle Spark Timing Control
Modifies commanded timing at idle to maintain target idle speed.
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