Description
The FiTech Rebel LS 500HP EFI Short Cathedral Intake & Inline Pump (71088) is a comprehensive solution designed to modernize and enhance the performance of LS engines. This kit provides a complete electronic fuel injection (EFI) conversion, offering improved efficiency and power. The system features a low-profile cathedral port intake manifold, a 92mm throttle body, 36 lb/hr injectors, and a self-tuning ECU. It also includes a complete fuel delivery system with an inline 255 LPH fuel pump, fuel lines, and filters. The “Rebel” design focuses on a cleaner aesthetic, with redesigned fuel rail brackets and a streamlined profile. This system is compatible with boost/nitrous applications and E85 fuel.
KEY FEATURES AND BENEFITS:
- EFI Conversion: Converts LS engines to modern electronic fuel injection for improved performance and efficiency.
- Self-Tuning ECU: Simplifies setup and optimizes engine performance automatically.
- Complete Kit: Includes intake manifold, throttle body, injectors, ECU, sensors, and fuel system components.
- Enhanced Aesthetic: “Rebel” design provides a cleaner, more polished engine bay appearance.
- Power Adder Compatibility: Boost/Nitrous compatible with a 3-bar MAP sensor (up to 27 PSI).
- Alternative Fuel Compatibility: Works with E85 fuel.
- Sequential Fuel and Spark Control: Improves ignition and fuel delivery precision.
- Reliable Fuel System: Includes a 255 LPH inline fuel pump for consistent fuel delivery.
SPECIFICATIONS:
- Maximum Horsepower: 500 HP
- Injection Style: Multi-port
- Timing Control Compatible: Yes
- Power Adder Compatible: Yes (Boost/Nitrous oxide)
- ECU Included: Yes
- Fuel Pump Included: Yes
- Transmission Controller Included: No
- Metering Style: Speed density (Map-N)
- Intake Manifold Material: Aluminum
- Intake Manifold Finish: Black Anodized
- Throttle Body Mounting Flange: GM LS2 4-bolt
- Throttle Body Diameter: 92mm
- Injectors: 36 lbs/hr
- Fuel Pump Style: External inline fuel pump
- Fuel Compatibility: Alcohol, Gasoline, Methanol, E85
- Compatibility: LS1, LS2, LS6, and similar standard deck LS engines
HOW TO USE:
- Preparation: Disconnect the battery and remove the existing intake manifold and fuel system.
- Install Intake Manifold: Position the FiTech Rebel LS intake manifold, ensuring proper gasket placement and torque specifications.
- Mount Throttle Body & Injectors: Attach the 92mm throttle body and install the 36 lb/hr injectors into the fuel rails.
- Install Sensors: Secure the MAP sensor, IAT sensor, and oxygen sensors as instructed.
- Connect ECU and Harness: Mount the ECU and attach the wiring harness, ensuring all connections are secure.
- Set Up Fuel System: Install the 255 LPH fuel pump, fuel lines, and filters. Connect the fuel pressure regulator.
- Configure Handheld Controller: Connect the handheld monitor and follow the on-screen instructions for initial setup and calibration.
- Initial Startup & Tuning: Start the engine and allow the self-tuning ECU to adjust fuel and spark parameters. Fine-tune using the handheld controller.
- Final Checks: Inspect all connections, check for fuel leaks, and test drive the vehicle for any necessary adjustments.
BENEFITS OF USING THE FiTech REBEL LS 500HP EFI SHORT CATHEDRAL INTAKE & INLINE PUMP (71088):
- Enhanced Engine Performance: Improves throttle response and power output.
- Increased Fuel Efficiency: Optimized fuel delivery reduces waste and improves mileage.
- Self-Learning Tuning: Eliminates manual tuning with automatic adjustments.
- Clean Engine Bay Look: Modern design enhances the overall aesthetic.
- Reliable Fuel Delivery: Includes a complete fuel system for dependable performance.
- Power Adder Compatibility: Works seamlessly with boost and nitrous setups.
- Flexible Fuel Options: Supports gasoline, methanol, alcohol, and E85 fuels.
FEATURES:
- Thicker gauge manifold for reduced injection noise
- Redesigned fuel rail brackets for enhanced aesthetics
- Complete sensor package included (MAP, IAT, Oxygen)
- Magnetic handheld mount for easy access
- Multiple throttle cable bracket options
- Fuel pressure regulator with pressure gauge
- EV1 injector sub harnesses
- Oxygen sensor extension harness






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