Ultimate Rebel LS 500HP EFI System wo/Trans Cont

The Ultimate Rebel LS 500HP EFI System without transmission control is a comprehensive multi-port fuel injection solution engineered for GM LS-series engine platforms seeking reliable, scalable performance without factory harness complexity. Designed for builders, engine shops, and enthusiasts who demand independent fuel management without integrated transmission control interfaces, this system delivers the injection precision required for street, strip, and dedicated racing applications where fuel delivery consistency drives power output and drivability.

This FiTECH fuel injection system features a 92mm aluminum throttle body paired with 36 lb/hr multi-port injectors, a configuration that supports up to 500 horsepower across LS engine displacement variants. The black powder-coat aluminum construction ensures corrosion resistance and thermal stability in demanding engine bay environments, while the 35.2 lb system weight distribution maintains favorable underhood balance. Multi-port injection architecture provides superior fuel atomization and cylinder-to-cylinder distribution compared to single-point systems, translating to improved combustion efficiency, reduced emissions, and enhanced cold-start and part-throttle response across the entire RPM band.

Ideal for LS engine swaps, custom builds, and restoration projects where simplified wiring and standalone operation are priorities, the Ultimate Rebel LS 500HP EFI System excels in applications requiring fuel injection tuning without factory ECU dependency. Installation suits fabricators comfortable with stand-alone fuel management and those transitioning from carburetor or older TPI systems. The elimination of transmission control simplifies harness routing and reduces potential integration conflicts, making this solution particularly valuable for vintage platforms, dedicated race vehicles, and independent engine tuning scenarios where total system control begins and ends at fuel delivery management.