Terminator X MPFI GM LS1/LS6

The Terminator X MPFI GM LS1/LS6 Engine Control Module by HOLLEY is a professional-grade fuel injection management system purpose-built for LS-platform engine swaps and high-performance modifications. Whether you're installing a legendary LS1 or LS6 powerplant into a classic chassis, a street rod, or upgrading an existing LS application, this ECU delivers the precision tuning and robust feature set that serious engine builders demand. The Terminator X platform eliminates the need for factory GM PCM programming while providing full control over fuel delivery, ignition timing, and engine parameters—making it the go-to solution for engine swaps where factory electronics won't cooperate.

At its core, the Terminator X MPFI controller manages multi-port fuel injection with advanced sequential firing capability, precisely metering fuel to each cylinder for optimal combustion efficiency across the RPM range. The module supports real-time tuning via Holley's intuitive software, allowing you to dial in fuel curves, ignition advance, and boost control without removing the engine or disconnecting wiring. Its compact design—measuring 11.3 x 7.4 x 12.1 inches and weighing just 8.65 lbs—fits neatly in tight engine bays where space is at a premium, while its robust construction handles the electrical demands of high-output LS motors and forced-induction applications. The system features integrated knock detection, closed-loop lambda control, and full diagnostic capability to monitor engine health in real time.

Engine builders, street rod fabricators, and performance enthusiasts benefit most from the Terminator X MPFI's versatility and tuning depth. If you're completing an LS1 or LS6 swap—whether into a Chevrolet classic, a fifth-gen Camaro project, or a custom build—this ECU pairs seamlessly with Holley's fuel injection and ignition hardware ecosystem. Installation requires basic wiring harness integration and sensor installation; detailed Holley documentation and online community support ensure a smooth commissioning process. The Terminator X remains fully compatible with aftermarket turbo systems, superchargers, and nitrous oxide kits, making it an ideal foundation for unlimited modification potential.