Related Manuals for Holley Sniper EFI 550-850
Summarization of Contents
Introduction and System Requirements
Engine Requirements
Specifies engine requirements for compatibility with the Sniper EFI system.
Fuel System Requirements
Outlines necessary fuel pump pressure and flow rate for the Sniper EFI system.
Tools Required for Installation
Lists all tools needed to correctly install the Sniper EFI system.
Unused Wire Management
Option 1: Pin Removal
Procedure for safely removing unused wires from connectors by extracting the pins.
Non-Timing Controlled Ignition Wiring
Coil (-) [No Timing Control]
Wiring for connecting to a stock inductive coil for RPM signal input without ECU timing control.
Timing Controlled Ignition System Wiring
Timing Control Preface
Introduction to the Sniper EFI's ignition timing control capability.
MSD Distributor Timing Control Setup
Steps for preparing an MSD distributor for ECU-controlled ignition timing.
Holley Dual Sync Distributor Timing Control
Distributor Removal
Steps to safely remove the Holley Dual Sync Distributor from the engine.
Distributor Installation
Procedure for installing the Dual Sync Distributor, ensuring proper gear mesh and alignment.
Handheld Navigation
Possible Screens Overview
Explains the touch screen interface and navigation methods for the handheld unit.
Initial EFI Setup
Calibration Wizards
Walks through initial system setup using guided wizards on the touchscreen.
Prestart Checklist
First Startup Procedure
Guidance for the initial engine crank, synchronization, and startup with Sniper EFI.
After Startup Checks
Monitoring key parameters and checking for leaks after the engine has started.
System Setup
Ignition System Setup
Configures ignition type, rev limiter, and other timing-related parameters.
Basic Tuning
Basic Fuel Adjustments
Adjusts target Air/Fuel ratios for idle, cruise, and wide open throttle conditions.
System Tuning
Outputs Configuration
Sets parameters for system outputs, typically used to control electric fans.
Advanced Tuning
Advanced Fuel Settings
Fine-tunes fuel enrichment, acceleration, cranking, and afterstart fuel delivery.
Sniper EFI Monitor
Monitors Screen
Displays live sensor data in a list format, with options for gauge view.
Multi-Gauge Screen
Shows live data in a gauge format, with customizable dashboard layouts.
Tuning Definitions
Target AFR Definitions
Defines target Air/Fuel Ratios for idle, cruise, and wide open throttle.
Acceleration Enrichment Definition
Tunes fuel added during throttle openings for improved acceleration response.
Tuning: System Settings
Outputs Configuration
Sets parameters for system outputs, typically used to control electric fans.
Engine Setup Configuration
Configures engine parameters like cylinder count, displacement, and camshaft type.
Sniper EFI Setup Configuration
Sets system type, injector flow rate, and base fuel pressure.
Ignition Setup Configuration
Configures ignition type, reference angle, rev limiter, and inductive delay.
Static Timing Configuration
Sets a fixed ignition timing value for initial distributor alignment.
Datalogging and File Transfers
Taking a Datalog with the 3.5" TSCLCD
Instructions on starting, stopping, and saving engine data logs using the handheld unit.
Laptop Support
Viewing Global Configuration via PC Software
Connects Sniper EFI to a PC to view and manage configurations without a USB cable.
Troubleshooting
Troubleshooting Guide
Provides a flowchart and resources for diagnosing and resolving system issues.
Sensor Verification
Checks proper reading of all vehicle sensors on the handheld before engine startup.
Need help?
Do you have a question about the Sniper EFI 550-850 and is the answer not in the manual?
Questions and answers