FT550 EFI System w/o Harness

The FT550 EFI System w/o Harness from FUELTECH USA is a standalone engine management solution designed for serious engine builders and performance enthusiasts who require precise fuel delivery control. This system effectively addresses the challenges faced by custom engine builders, turbocharged applications, and carbureted-to-EFI conversions by managing complex fuel injection parameters without the limitations of factory ECUs.

The FT550 EFI System operates as a dedicated fuel injection controller, managing injector firing, fuel pump relay management, and closed-loop oxygen sensor feedback independently from the vehicle's original engine computer. This architecture allows tuners to create precise fuel maps for unconventional engine combinations, including supercharged builds and alternative fuels, where standard ECUs may not suffice. Its compact form factor (7.45 × 6.75 × 14.35 inches, weighing 2.46 lbs) is designed to fit in engine bays with limited space.

The FT550 platform is ideal for performance builds, carbureted-to-EFI conversions, and shop tuning, providing the flexibility needed to optimize air-fuel ratios across the entire RPM band. While the system is sold without a wiring harness, it allows users to customize or reuse existing harnesses for their specific installation needs, ensuring compatibility with a variety of engine setups.