Ultimate EFI LS Kit 500 HP w/Trans Control

The FiTECH Ultimate EFI LS Kit 500 HP with Trans Control delivers a complete, plug-and-play electronic fuel injection system engineered for LS-series engines demanding modern reliability and tuning flexibility. This multi-port injection solution replaces carburetor-dependent setups with sequential fuel delivery, managed by an integrated transmission controller that coordinates fuel and shift mapping for seamless drivability across a wide power band.

The kit features 36 lb/hr injectors sized to support 500 horsepower while maintaining precise fuel atomization at cruise and wide-open throttle. Black anodized aluminum construction resists corrosion in high-heat engine bay environments and provides durability for extended use. Compatibility spans LS3, L92, and other GM LS-series platforms, making this system adaptable across multiple generations of LS architecture. The included transmission controller eliminates the need for standalone aftermarket solutions, reducing wiring complexity and integration points that commonly cause tuning issues in bolt-on fuel injection conversions.

This system addresses a primary pain point for LS engine builders: managing both fuel delivery and transmission function within a single, cohesive platform. Whether upgrading a classic car, truck, or performance application, users benefit from factory-level drivability without custom harness fabrication or third-party controller pairing. The 500 HP rating reflects realistic output potential when combined with supporting modifications such as intake, exhaust, and ignition upgrades—specification claims grounded in actual dyno testing across the LS community.

LS-series engines continue to dominate engine-swap and performance-build conversations due to their efficiency, aftermarket support, and power-per-dollar value. An integrated EFI and transmission control package significantly reduces build time and troubleshooting compared to piecing together separate fuel injection, ECU, and TCM solutions. This kit delivers that integration out of the box, making it a trusted baseline for builders prioritizing reliability and street-drivable performance.