EFI Terminator X Max GM LS1/LS6 w/Trans Control

The EFI Terminator X Max GM LS1/LS6 with Transmission Control is a fully integrated engine management system designed for serious LS-platform builds requiring precise fuel injection and automatic transmission tuning in a single package. Built for enthusiasts and professional shops tackling high-performance LS conversions, this system eliminates the complexity of wiring separate ECUs while delivering the reliability and feature-set expected in modern EFI applications. Whether you're building a street machine, restomod, or race-focused LS swap, the Terminator X Max handles both spark and fuel delivery alongside transmission control logic.

The Terminator X Max combines Holley's battle-tested EFI architecture with integrated transmission control, allowing you to manage both engine and drivetrain parameters from a single controller—eliminating costly secondary modules and reducing wiring harness complexity. The system processes real-time sensor data from intake manifold air temperature, mass airflow, oxygen sensors, and transmission fluid pressure inputs to deliver adaptive fuel mapping and shift logic that responds to load, throttle position, and engine speed. Its modular design accepts plug-and-play engine harnesses for LS1 and LS6 applications, while the integrated trans controller supports common GM automatics with full boost control, rev limiting, and closed-loop feedback for repeatable performance across varying conditions.

Mechanics and fabricators working on LS engine conversions benefit most from the Terminator X Max's all-in-one architecture, as it streamlines engine bay packaging and simplifies troubleshooting compared to standalone fuel and transmission controllers. The system is particularly suited for street-to-strip vehicles where transmission shift responsiveness and engine fuel delivery must work in harmony, as well as for vintage car restorations where modern drivability and emissions compliance matter. Installation requires proper wiring termination and sensor calibration; detailed documentation and Holley's online support resources guide users through fuel tank pickup, injector sizing, and transmission input configuration to ensure optimal results across your specific LS combination.