Description
The FiTech LS 500 HP EFI Long Intake w/ Returnless Module & Coil (78806) offers a comprehensive solution for upgrading or retrofitting LS engines with cathedral port cylinder heads to modern electronic fuel injection. This kit is engineered to support engines up to 500 horsepower, providing improved performance and tunability. It includes all necessary components for a complete installation, from the intake manifold and throttle body to the ECU and fuel system options.
KEY FEATURES AND BENEFITS:
- Complete EFI System: Includes intake manifold, throttle body, injectors, ECU, wiring harness, and sensors.
- 500 HP Support: Designed for engines producing up to 500 horsepower.
- Multi-Port Injection: Delivers fuel directly to each cylinder for precise control.
- Self-Learning ECU: Automatically adjusts fuel delivery for optimal performance.
- Touchscreen Controller: Provides easy setup, tuning, and monitoring.
- Fuel System Options: Choice of in-tank pump modules, inline pump, or Force Fuel system.
- Boosted Application Ready: 3 bar MAP sensor for turbo or supercharger use.
- Flex Fuel Capability: Compatible with gasoline, methanol, and alcohol blends.
- LS3 Style Coil Packs: Improved ignition performance.
SPECIFICATIONS:
- Maximum Horsepower: 500 HP
- Injection Style: Multi-port
- Timing Control: Yes
- Power Adder Compatible: Yes (Boost/Nitrous)
- ECU Included: Yes
- Fuel Pump: Included (various options)
- Intake Material: Aluminum
- Throttle Body: 92mm
- Injector Size: 36 lbs./hr.
- Metering Style: Speed density (MAP-N)
HOW TO USE:
- Preparation: Ensure the engine is properly prepared for EFI conversion. Remove the old intake and carburetor setup.
- Intake Installation: Mount the FiTech long runner cathedral intake manifold onto the cylinder heads.
- Throttle Body and Injector Installation: Install the 92mm throttle body and 36 lb./hr. injectors onto the intake manifold.
- Sensor Installation: Install the MAP, IAT, TPS, and oxygen sensors.
- Fuel System Setup: Choose and install the desired fuel pump module or system. Connect fuel lines and regulator.
- Wiring Harness Connection: Connect the wiring harness to all sensors, injectors, and coil packs.
- ECU and Controller Setup: Mount the ECU and connect the handheld touchscreen controller.
- Initial Setup: Follow the touchscreen controller’s instructions for initial setup and calibration.
- Engine Start and Self-Learning: Start the engine and allow the self-learning ECU to adjust fuel delivery.
- Tuning: Fine-tune the system using the touchscreen controller if desired.
BENEFITS OF USING THE FITECH LS 500 HP EFI LONG INTAKE W/ RETURNLESS MODULE & COIL (78806):
- Improved Engine Performance: Precise fuel control leads to increased horsepower and torque.
- Enhanced Fuel Efficiency: Electronic fuel injection optimizes fuel delivery.
- Simplified Tuning: Self-learning ECU and touchscreen controller make tuning easy.
- Modernization: Upgrades older LS engines with modern EFI technology.
- Reliable Operation: Quality components and comprehensive kit.
FEATURES:
- Fabricated 3mm thick aluminum sheet metal intake manifold.
- Cast, cable activated billet aluminum 92mm throttle body.
- Handheld controller with color touch screen and cable.
- Windshield mount for touch screen controller.
- Sequential fuel and spark control with individual cylinder trim.
- Connects to 24x and 58x cam sensors.
- Knock sensor control connects to factory sensors.
- Two programmable electric fan outputs.
- Supplied with WBO2 sensors.
- High volume billet fuel rails.





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