Ultimate Rebel LS 1000HP EFI System wo/Trans Cont

The Ultimate Rebel LS 1000HP EFI System wo/Trans Cont from FiTECH Fuel Injection is a comprehensive electronic fuel injection solution engineered for high-performance LS-platform engine builds demanding precision fuel metering without transmission control integration. Designed for enthusiasts and professional builders who require standalone EFI management on naturally aspirated or boosted LS applications, this system eliminates carburetor tuning variables and delivers consistent fuel delivery across the entire RPM band. Whether you're building a street engine, off-road platform, or dedicated performance package, this controller operates independently of factory transmission electronics, giving you complete engine control authority.

This Ultimate Rebel LS system features FiTECH's proven sequential multi-port fuel injection architecture paired with advanced ignition control and real-time engine parameter monitoring. The standalone configuration means you retain full autonomy over fuel pressure regulation, ignition timing, and cold-start enrichment without interference from OEM transmission logic—critical when running modified fuel systems, alternative ignition platforms, or non-factory powertrain combinations. The controller uses self-learning algorithms to adapt to your specific engine's airflow characteristics, ensuring rapid throttle response and stable idle across ambient temperature and altitude variations. At 35.2 lbs, the complete assembly integrates the ECU, fuel rails, injectors, and harness in a compact footprint that fits within standard engine bay dimensions (16.3 x 14.6 x 26 inches).

This system is ideal for LS engine swaps into non-OEM platforms, restomod builds, and competition engines where traditional carburetor or factory ECU solutions prove limiting. Installation requires basic electrical knowledge and mechanical competency; the system supports both carbureted and injected LS blocks from LS1 through LSx variants. Because this unit operates without transmission control functions, it pairs seamlessly with manual gearboxes, aftermarket automatics, or boost applications where independent fuel and ignition management is non-negotiable. Professional tuning support and real-time data logging capabilities ensure your build achieves repeatable power delivery and reliability in demanding conditions.