Description
The FiTech 2×4 625 HP Bright Aluminum EFI w/ Force Fuel Tank (35661) provides a complete electronic fuel injection solution for engines up to 625 horsepower. This kit combines classic dual 4-barrel styling with modern EFI technology, offering improved performance and ease of use. Featuring self-tuning capabilities and a comprehensive fuel delivery system, this kit simplifies the transition to electronic fuel injection.
KEY FEATURES AND BENEFITS:
- Supports up to 625 horsepower with gasoline.
- Dual 4-barrel throttle bodies for high airflow (1700 CFM).
- Self-tuning ECU adapts to engine conditions, simplifying setup.
- Force Fuel system with internal high-pressure pump ensures consistent fuel delivery.
- Speed density (MAP-N) metering for accurate fuel calculations.
- Complete master kit includes all necessary components for installation.
- Compatible with alcohol, gasoline, methanol, and flex fuel.
- 36 lbs/hr injectors for proper fuel delivery.
- 4.5-inch handheld display for monitoring.
SPECIFICATIONS:
- Maximum Horsepower: 625 HP (gasoline)
- Injection Style: Throttle body
- Throttle Body Mounting Flange: Dual 4-barrel square bore
- Venturi Quantity: 8 (4 per throttle body)
- Venturi Diameter: 44 mm
- Airflow Rate: 1700 CFM
- Injector Size: 36 lbs./hr
- Metering Style: Speed density (MAP-N)
- Fuel Pump Style: External (Force Fuel system)
- Display: 4.5-inch handheld
HOW TO USE:
- Install the dual 4-barrel throttle bodies onto the intake manifold.
- Mount the Force Fuel system in a suitable location.
- Connect the wiring harness to the ECU and engine sensors (MAP, IAT, TPS, O2).
- Install the oxygen sensor in the exhaust system.
- Connect the fuel lines from the Force Fuel system to the throttle bodies.
- Connect the handheld display to the ECU.
- Start the engine and allow the self-tuning ECU to adjust fuel parameters.
- Use the handheld display to monitor and fine-tune settings as needed.
BENEFITS OF USING THE FITECH 2×4 625 HP BRIGHT ALUMINUM EFI W/ FORCE FUEL TANK (35661):
- Improved engine performance and throttle response.
- Enhanced fuel efficiency and reduced emissions.
- Simplified tuning process with self-tuning capabilities.
- Consistent fuel pressure and delivery with the Force Fuel system.
- Classic dual 4-barrel appearance with modern EFI technology.
- Easy install due to the complete master kit.
FEATURES:
- Dual throttle body setup.
- Integrated ECU within one throttle body.
- Force Fuel system with internal 340 LPH fuel pump.
- Handheld display for real-time monitoring.
- Compatibility with multiple fuel types.
- External fuel pump included in the Force Fuel system.
- Speed density fuel metering.
- Included O2 sensor.
- Included fuel pressure regulator.






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