Description
The FiTech LS 1000 HP EFI In-Tank Pump LS3 Intake Master Kit (79634) represents a comprehensive upgrade for LS engine enthusiasts seeking improved performance and efficiency. This system replaces traditional carburetors with modern electronic fuel injection, offering precise fuel and spark control. Designed for high-horsepower applications, it supports up to 1,000 HP, making it suitable for performance builds and engine swaps.
KEY FEATURES AND BENEFITS:
- Complete EFI Solution: Includes an LS3 port intake manifold, a 102mm throttle body, and 80 lb/hr fuel injectors.
- Self-Learning Technology: Automatically tunes the system for optimal air/fuel ratios.
- Sequential Fuel and Spark Control: Offers individual cylinder trim for enhanced engine performance.
- Boost Capability: A 3-Bar MAP sensor supports boosted applications up to 30 psi.
- User-Friendly Controller: Handheld controller with a color touchscreen for easy adjustments and monitoring.
- Flexible Fuel System Options: In-tank fuel pump modules and fuel pressure regulators tailored for various setups.
SPECIFICATIONS:
- Fuel Injection Style: Multi-port
- Maximum Horsepower: 1,000 HP
- Throttle Body: 102mm, cast aluminum
- Injectors: 80 lb/hr
- Intake Manifold: Aluminum, LS3 port
- ECU: Included
- Self-Tuning: Yes
- Fuel System: In-tank pump options, regulator included
- Transmission Control: Optional for GM 4L60/65/80/85
- MAP Sensor: 3-Bar
- Display: 4.5-inch color touchscreen
HOW TO USE:
- Preparation: Disconnect the battery and remove the existing carburetor and intake manifold.
- Installation: Install the FiTech LS3 port intake manifold and 102mm throttle body.
- Fuel System: Install the chosen in-tank fuel pump module and connect the fuel lines to the fuel rails and regulator.
- Wiring: Connect the FiTech wiring harness to the engine sensors (MAP, IAT, TPS, crank, cam, knock).
- Injectors and Coils: Install the 80 lb/hr injectors and, if included, the Go-Spark LS coil packs.
- ECU and Sensors: Mount the ECU and connect the oxygen sensor and other necessary sensors.
- Handheld Controller: Connect the handheld controller and mount it in a convenient location.
- Initial Setup: Follow the on-screen instructions on the handheld controller to input engine parameters.
- Self-Learning: Start the engine and allow the system to self-learn and adjust the air/fuel ratios.
- Tuning: Fine-tune the system using the handheld controller as needed.
BENEFITS OF USING THE FITEC LS 1000 HP EFI IN-TANK PUMP LS3 INTAKE MASTER KIT (79634):
- Improved Engine Performance: Enhances horsepower and overall efficiency.
- Enhanced Fuel Efficiency: Optimizes fuel delivery for better mileage.
- Precise Control: Offers accurate fuel and spark adjustments for optimal performance.
- Simplified Tuning: Self-learning technology makes tuning straightforward.
- Compatibility with Boosted Applications: Suited for high-performance setups.
- Modern EFI Technology: Upgrades older LS engines for improved performance.
- Simplified Installation: Easier setup compared to other aftermarket EFI systems.
FEATURES:
- Durable Intake Manifold: Fabricated 3mm thick aluminum sheet metal and TIG welded for strength.
- High-Performance Throttle Body: Cast, cable-activated billet aluminum 102mm throttle body.
- Handheld Controller: Features a color touch screen and cable with a windshield mount for easy access.
- LS ECU: Connects to 24x and 58x cam sensors for accurate data collection.
- High Volume Injectors: 80 lb/hr injectors with high volume billet fuel rails for reliable fuel supply.
- Sequential Fuel and Spark Control: Provides precise control over fuel delivery and ignition timing.
- Knock Sensor Control: Connects to factory sensors for enhanced engine protection.
- Tach Output Driver: Works with most tachometers for accurate RPM readings.
- Programmable Electric Fan Outputs: Two outputs for managing electric fans efficiently.
- Custom Wiring Harness: Designed for a direct plug-in installation, simplifying setup.
- WBO2 Sensors Included: Supplied for accurate air-fuel ratio monitoring.






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