Description
The FiTech EFI 2×4 625 HP Force Fuel & Fuel Injection Master Kit (93721) provides a comprehensive solution for upgrading your V8 engine to electronic fuel injection. This kit replaces traditional carburetors with dual 4-barrel throttle bodies, enhancing performance, fuel efficiency, and drivability. It includes a Force Fuel system for consistent fuel delivery and a Go Spark CDI ignition for improved combustion.
KEY FEATURES AND BENEFITS:
- This kit features dual 4-barrel throttle bodies designed for 4150 flange intake manifolds, supporting up to 625 horsepower.
- The included Force Fuel system ensures a steady 58 psi fuel pressure, using a surge tank and high-pressure pump.
- The Go Spark CDI ignition system enhances combustion with multiple sparks at low RPM and high-energy sparks at high RPM.
- The self-tuning ECU simplifies setup, while the handheld touchscreen controller allows for easy monitoring and adjustments.
- The kit includes all necessary sensors, wiring harnesses, and fuel delivery components.
SPECIFICATIONS:
- Fuel Injection Style: Throttle body
- Fuel Injection System Type: Dual 4-Barrel Throttle Bodies (4150 Flange)
- Maximum Horsepower with Gas: 625 HP
- Timing Control Compatible: Yes
- ECM Included: Yes
- Self Tuning: Yes
- User Tunable: Yes
- Fuel System Included: Surge tank
- Ignition System Included: Ignition box
- User Interface Included: 4.5 in. display
- Metering Style: Speed density
- Throttle Body Mounting Flange: Dual 4-barrel square bore
- Venturi Quantity: 8
- Venturi Diameter (mm): 44.00mm
- Airflow Rate (cfm): 1,700 cfm
- Injector Size: 62 lbs./hr.
HOW TO USE:
- Preparation: Disconnect the battery and remove the existing carburetor and intake manifold.
- Installation: Install the new intake manifold (if needed), then mount the dual throttle bodies onto the manifold.
- Fuel System Setup: Install the Force Fuel surge tank, connect the fuel lines, and ensure proper fuel pressure.
- Sensor Installation: Mount all included sensors (WBO2, coolant, MAP, IAT, TPS) in their designated locations.
- Wiring: Connect the wiring harnesses to the sensors, ECU, and ignition system according to the instructions.
- Ignition Setup: Install the Go Spark CDI ignition box and connect it to the distributor.
- Initial Setup: Connect the handheld controller, power on the system, and follow the on-screen prompts for initial setup.
- Tuning: Start the engine and allow the self-tuning feature to adjust the fuel and ignition parameters. Fine-tune as needed using the handheld controller.
BENEFITS OF USING THE FITECH EFI 2×4 625 HP FORCE FUEL & FUEL INJECTION MASTER KIT (93721):
- Improved engine performance and throttle response.
- Enhanced fuel efficiency and consistent fuel delivery.
- Simplified setup and tuning with self-tuning capabilities.
- Enhanced combustion and ignition performance.
- Comprehensive kit with all necessary components included.
FEATURES:
- Dual 4-barrel throttle bodies for high airflow.
- Integrated ECU within one throttle body.
- Force Fuel system with internal high-pressure pump.
- Go Spark CDI ignition for multiple spark delivery.
- Handheld touchscreen controller for real-time monitoring.
- 62 lbs./hr fuel injectors for optimal fuel delivery.
- Comprehensive sensor suite for accurate engine management.
- Compatible with various distributor types.
- Surge tank design to prevent fuel starvation.





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