Holley Sniper EFI 550-516 - User Manual

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550-510, 550-511, & 550-516
QUICK START MANUAL
SNIPER EFI INSTALLATION INSTRUCTIONS
Congratulations on your purchase of a new Sniper EFI Throttle Body System built
by craftsmen to exacting standards in our Bowling Green, Kentucky facility. Every
Sniper EFI System is 100% tested before it leaves our facility for “bolt on and go”
performance.

Summary

Introduction and System Requirements

Engine Requirements

Details the necessary specifications for the vehicle's engine.

Fuel System Requirements

Specifies the high-pressure fuel pump and line requirements for the system.

Tools Required for Installation

Lists the tools needed to perform the Sniper EFI installation.

Sniper EFI Wiring Harness Overview

Before You Get Started

Advises checking engine condition and vacuum leaks before EFI conversion.

Installation Notes

Provides guidance on specific installation steps and ignition options.

Inputs, Outputs, and Initial Power-Up

Additional Inputs and Outputs

Details the functions of wires in the 7-pin and 10-pin connectors.

Initial Power-Up and Wizard

Guides through powering the ECU and launching the handheld control module.

Calibration Wizard Setup

System Type and Engine Configuration

Covers selecting system type, cylinders, displacement, and idle speed.

Camshaft and Power Adder Setup

Guides on selecting camshaft type and power adder options.

Ignition and Timing Configuration

Addresses ignition type, timing control, and WOT timing settings.

Sensor Verification, Startup, and Operation

Sensor Verification

Explains how to verify sensor readings before starting the engine.

Startup Procedure

Details the process of cranking the engine and initial startup checks.

After Startup Monitoring

Lists parameters to monitor and check after the engine has started.

Idle, Timing, and First Drive

Idle Setting and Throttle Plate Adjustment

Guides on adjusting idle speed and throttle plate position using the IAC.

Initial Startup and Distributor Timing

Covers static timing setup and distributor positioning for ECU timing control.

First Drive and Self-Tuning Process

Provides instructions for the initial drive and the self-tuning process.

Holley Sniper EFI 550-516 Specifications

General

Type	Fuel Injection System
Model	Sniper EFI 550-516
Horsepower Rating	650 hp
Self-Tuning	Yes
Compatibility	Universal fit for small block and big block engines
Product Line	Sniper EFI
MPN	550-516
Throttle Body Included	Yes
ECU Included	Yes
Fuel Injectors Included	Yes
Fuel Rails Included	Yes
Number of Injectors	4
Throttle Body Material	Aluminum
Maximum Horsepower Supported	650 hp
Fuel Required	Gasoline
Ignition Control	Yes
Transmission Control	No
Power Output	650 HP
Fuel Type	Gasoline
Voltage Requirement	12V
Part Type	Fuel Injection Kit
Injector Size (lbs/hr)	100 lb/hr
Throttle Bore Size	92mm
Throttle Body Finish	Black
Throttle Body Size	90 mm
Included Components	ECU, Wiring Harness, Fuel Injectors, Throttle Body, Fuel Rails