Related Manuals for Holley Sniper EFI 550-850K
Summarization of Contents
INTRODUCTION & SYSTEM REQUIREMENTS
Engine Requirements
Specifies the engine requirements for the Sniper EFI system installation.
Fuel System Requirements
Details the fuel system requirements, including pump pressure and flow.
THROTTLE BODY INSTALLATION
Draw-through Supercharger Applications
Specific instructions for draw-through supercharger applications.
Throttle Body Installation Steps
Steps for installing the throttle body onto the intake manifold.
Throttle Linkage/Bracket Side View
Illustrates throttle linkage and bracket connections.
Vacuum Port Side View
Shows vacuum port connections on the throttle body.
OXYGEN SENSOR INSTALLATION
Warning on AIR Pump and Sensor Location
Critical warning about AIR pump and oxygen sensor location.
Clamp-On O2 Bung Kit Options
Lists available clamp-on O2 bung kit part numbers.
COOLANT TEMPERATURE SENSOR INSTALLATION
FUEL SYSTEM CONNECTIONS
Instructions for connecting the fuel feed and return lines.
Fuel Fitting Overview
Diagram of fuel fittings and connections.
Fuel System Safety Precautions
Safety precautions for fuel system work.
Fuel Pump and Filter Installation
Filter Installation Warning
Warning about filter installation direction.
Return Line Bulkhead Fitting Installation
Instructions for installing the return line bulkhead fitting.
Fuel Line Installation
Fuel Line Standards Warning
Dangers of using incorrect fuel line standards.
Hose Assembly Steps
Steps for assembling fuel hoses.
Hose Installation Best Practices
Guidelines for proper hose routing and installation.
ECU WIRING OVERVIEW
Handheld Display Connection
Overview of the handheld display connection.
Holley Gauges Wiring
Wiring for Holley gauges.
Ignition Switch Wiring
Connection for the ignition switch.
BASIC WIRING INSTALLATION
7-Pin Main Harness Details
Details of the 7-pin main wiring harness connector.
10-Pin I/O Harness Details
Details of the 10-pin I/O harness connector.
8-Pin Connector Details
Details of the 8-pin connector for specific models.
Handheld and Sensor Connectors
Connections for handheld display and sensors.
GENERAL WIRING REFERENCE
Wiring Best Practices (DO'S)
Best practices for wiring installation.
Wiring Practices to Avoid (DON'TS)
Practices to avoid during wiring installation.
Throttle Body and Loose Wire Connections
Connecting throttle body and power/ground wires.
Connecting Sniper EFI Touchscreen LCD
Disconnecting the Touch Screen LCD
Instructions for disconnecting the touch screen LCD.
Handling Unused Wires
Option 1: Pin Removal Procedure
Procedure for removing unused pins from connectors.
NON-TIMING CONTROLLED IGNITION WIRING
Coil (-) Wiring
Wiring for non-timing control using a coil.
Ignition System Warnings and Notes
Warning against capacitive discharge ignitions and notes.
Ignition Box Tach Output (No Timing Control)
Option 2 Wiring: Tach Out
Wiring for ignition box tach output.
Ignition Wiring Cautions
Caution against connecting EFI wires to CD ignition coils.
TIMING CONTROLLED IGNITION SYSTEM WIRING
Timing Control Preface
Explains the optional ignition timing control feature.
MSD Distributor Timing Control Setup
Setup for timing control using an MSD distributor.
Distributor Removal Steps
Steps to remove the distributor.
Distributor Lock Out Procedure
Steps to lock out the distributor's mechanical advance.
Vacuum Advance Removal
Instructions for removing vacuum advance.
Installing the Adjustable Rotor
Instructions for installing the adjustable rotor.
Installing the Distributor
Steps for installing the distributor into the engine.
Distributor Cap Fitting
Fitting the distributor cap and aligning the rotor.
Distributor Harness Connection
Connecting the distributor to the Sniper EFI harness.
Ignition Timing Check Reference
Reference for ignition timing checks.
Holley Dual Sync Distributor Timing Control
Dual Sync Distributor Removal
Steps to remove the Holley Dual Sync Distributor.
Dual Sync Distributor Installation
Steps for installing the Holley Dual Sync Distributor.
Dual Sync Distributor Alignment
Aligning the distributor using LED indicators.
Distributor Alignment Notes
Note on not rotating the crankshaft during alignment.
Engine Family Rotor Rotation Chart
Chart of engine families and rotor rotation.
Clockwise Rotor Rotation
Clockwise Rotor Alignment Diagrams
Diagrams for clockwise rotor alignment.
Clockwise Rotation Final Steps
Final steps after clockwise rotor adjustment.
Counter-Clockwise Rotor Rotation
Counter-Clockwise Rotor Alignment Diagrams
Diagrams for counter-clockwise rotor alignment.
Counter-Clockwise Rotation Final Steps
Final steps after counter-clockwise rotor adjustment.
HANDHELD NAVIGATION
Possible Screens Overview
Overview of the handheld touch screen interface.
Handheld Input Methods
Using slider bars, radio buttons, lists, and prompts.
Graph Options
Graph Adjustment Types
Digitally, graphically, entire curve, point-by-point, live data options.
INITIAL EFI SETUP
Calibration Wizards Procedure
Steps to run the initial calibration wizards.
Wizard Steps 1-5
Steps 1-5 of the wizard: System type, cylinders, displacement, idle.
Wizard Steps 6-10
Steps 6-10 of the wizard: Cam type, ignition, power adder, timing.
Wizard Steps 11-13
Steps 11-13 of the wizard: AFR settings and calibration upload.
Sensor Verification
Important Startup Cautions and Notes
Cautions about key cycles and notes on fuel checks.
Startup Sensor Reading Checks
Checks for Engine RPM, TPS, MAP, MAT, CTS, AFR sensors.
Prestart Checklist
Wiring Verification
Check wiring connections, power, and grounds.
Initial Engine Startup Procedure
Procedure for the initial engine startup and idle.
Post-Startup Checks and Monitoring
Checks and parameters to monitor after startup.
Ignition Timing Check (ECU Controlling Timing)
Distributor Positioning for Timing Control
Positioning distributor and setting static timing.
Adjusting Ignition Timing Parameters
Adjusting idle, cruise, WOT, and cranking timing.
THROTTLE BLADE ADJUSTMENT
Setting Basic Idle Speed
Setting basic engine idle speed when warm.
IAC Position Monitoring for Adjustment
Monitoring IAC Position for throttle blade adjustment.
SYSTEM SETUP
Ignition System Setup
Configuring ignition system settings.
Default Ignition Configurations
Default settings for Coil, Magnetic, CD Box, Holley Dual.
BASIC TUNING
Basic Tuning Areas
Areas for basic tuning: Fuel, Learn, Idle, Spark.
Target AFR
Acceleration Enrichment
Adjusting the accelerator pump function.
Spark
System Tuning Overview
Accessing system tuning menus.
Output Adjustments (Fan Settings)
Adjusting fan ON/OFF temperatures.
Engine Setup
Engine Configuration Parameters
Cylinders, displacement, and camshaft type settings.
Sniper Setup
Sniper System Configuration
System type, injector flow, and fuel pressure settings.
Ignition Setup
Ignition Setup Parameters
Ignition type, angle, limiter, delay, and dwell settings.
ADVANCED TUNING
Advanced Tuning Categories
Categories: Adv Fuel, Closed Loop, Adv Learn, Adv Idle, Launch.
Closed Loop Operations
Closed Loop Parameter Adjustments
Enable/Disable, Limit, and Speed settings.
Additional Closed Loop Settings
Closed Loop 2 parameters.
Advanced Learn Functions
Learn Compensation and Transfer
Learn limits and transferring learn data.
Advanced Idle Control
IAC Rampdown Settings
Idle Air Control rampdown settings.
Launch Control Features
Launch Control Features
2-Step, Launch Retard, and related parameters.
SNIPER EFI MONITOR
Monitors List View
Viewing live data in a list format.
Multi-Gauge View
Viewing live data in a gauge format.
Changing Monitor Channel Scaling
Air/Fuel Ratio Scaling Example
Example of scaling the Air/Fuel Ratio gauge.
Custom Dash Configuration
Customizing dash screen layouts.
TUNING DEFINITIONS
Basic Fuel Tuning Definitions
Definitions for basic fuel parameters: AFR, Accel, Prime.
Closed Loop and Learn Definitions
Basic Idle and Spark Definitions
Definitions for basic idle speed and spark timing.
Tuning System Parameters
System Outputs and Setup
Outputs, Engine Setup, and Sniper Setup parameters.
Ignition and Static Timing Setup
Ignition Setup and Static Timing parameters.
Advanced Fuel Tuning Definitions
Advanced Fuel Parameters
Coolant enrichment, load acceleration, cranking, afterstart fuel.
Advanced Closed Loop Parameters
Closed Loop #1 and #2 Settings
Closed Loop #1 and #2 parameter adjustments.
Advanced Learn Settings
Advanced Learn compensation limits.
Advanced Idle Control Parameters
IAC Settings Overview
IAC Rampdown, Speed, and Startup settings.
Idle Speed Curve Adjustment
Idle Speed curve adjustments.
Advanced Launch Control Parameters
Launch Control Features
2-Step and Launch Retard features.
ECU Overview and Configuration
ECU info, global configs, HW/FW, and local setup.
Super Sniper Nitrous Control
Nitrous Activation and Tuning
Nitrous activation parameters and stage 1 tuning.
Super Sniper Boost Control
Boost Control Setup and Safety
Boost control setup and safety parameters.
Super Sniper Advanced Tables
Advanced 1D and 2D Table Configuration
1D and 2D table configuration requiring software.
DATALOGGING & FILE TRANSFERS
Taking a Datalog with the 3.5" TSCLCD
Steps to take a datalog using the handheld.
Downloading and Loading Configurations
Downloading Configuration to SD Card
Downloading global configuration from ECU to SD card.
Loading Calibration into Sniper EFI ECU
Steps to load calibration into the ECU.
LAPTOP SUPPORT
Viewing Configurations with PC Software
Viewing configurations using Sniper EFI PC software.
TROUBLESHOOTING
Troubleshooting Guide Link
Link to the official troubleshooting flow chart.
Sensor Verification on Handheld
Verifying sensor readings on the handheld.
Sensor Diagnostics and Status Navigation
Navigating sensor diagnostics and statuses.
Wideband Oxygen Sensor Status
Shows status of wideband oxygen sensors.
General Sensor Statuses
Shows status of coolant, air temp, MAP, TPS sensors.
RPM Input Diagnostics
Diagnostics for crank sensor/engine speed input.
Closed Loop Diagnostics
Shows status of closed loop operation.
Learn Mode Status
Shows status of learn mode.
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