Ultimate EFI LS Kit 500 HP w/o Trans Control

The Ultimate EFI LS Kit 500 HP w/o Trans Control by FiTECH FUEL INJECTION is purpose-built for LS engine swaps and carbureted-to-fuel-injection conversions where engine management takes priority without transmission control integration. This complete system addresses the core challenge every LS builder faces: reliable, tunable fuel delivery on an affordable budget. Whether you're converting a classic hot rod, restomod, or street machine with a modern LS powerplant, this kit eliminates the complexity of standalone ECU wiring while delivering the precision fuel control that LS engines demand for consistent power across the RPM band.

FiTECH's Ultimate EFI system features a self-tuning algorithm that learns and adjusts fuel mapping in real time, removing the guesswork from carburetor-style tuning or piggyback modules. The 500 horsepower capacity rating ensures headroom for naturally aspirated and moderately boosted applications, while the standalone engine control strategy simplifies harness routing—critical in tight engine bays where OEM transmission controllers create unnecessary complexity. Integrated sensors monitor coolant temperature, manifold air pressure, and throttle position; the system automatically compensates for load changes, altitude variations, and fuel quality inconsistencies that plague traditional carburetors. Built-in datalogging via Bluetooth connectivity allows real-time tuning adjustments from a smartphone or tablet, eliminating dyno visits for minor fuel curve refinement.

This kit is ideal for builders running manual transmissions, pre-electronic automatics, or modern transmissions with standalone control modules. Installation suits LS1, LS2, LS3, and LS-based engines in classic vehicles, kit cars, and dedicated performance platforms where OEM wiring becomes a liability rather than a solution. The absence of transmission control means you retain full flexibility with your drivetrain choice—mate this system to a TH400, Tremec manual, or modern standalone-controlled automatic without ECU conflicts. Weighing 28.83 lbs with manageable dimensions of 16 x 12 x 27 inches, the complete assembly fits under most dash installations or under-hood panels, making it suitable for tight restoration work and custom builds where space is at a premium.