Holley EFI Terminator X Max GM Gen V LT4 Direct Injection Kit – Early

Holley EFI Terminator X Max GM Gen V LT4 Direct Injection Kit – Early

The Holley EFI Terminator X Max GM Gen V LT4 Direct Injection Kit – Early puts you in full control of your GM Gen V LT4 engine with plug-and-play EFI and advanced tuning features. Designed for early DI fuel rail pressure sensor engines, this kit supports direct injection, variable valve timing, drive-by-wire throttle, and 6L80/6L90E transmission control. It’s ideal for swaps or performance builds needing race-proven Holley EFI technology in a budget-friendly package.

Key Features

• Plug-and-play control for GM Gen V LT engines with GDI and VVT support
• 3.5” handheld touchscreen with easy calibration wizard and real-time tuning
• Drive-by-wire throttle body and 6L80/6L90E transmission control
• Integrated 1bar MAP sensor plus support for external MAP sensor on boosted setups
• Four programmable inputs and outputs for fans, boost control, nitrous, and more
• Supports OEM injectors and includes Bosch LSU 4.9 wideband oxygen sensor control
• Advanced boost and nitrous control with multiple safety features
• On-board diagnostic LEDs for quick troubleshooting
• Self-tuning capability with free Holley EFI software for laptop tuning

Fitment

• GM Gen V LT4 engines with early DI fuel rail pressure sensor (4-pin connector)
• Compatible with vehicles using 6L80 or 6L90E transmissions

Note: Verify your engine’s DI fuel rail pressure sensor connector type to ensure correct kit selection. Fuel pump and injectors are not included. Advanced tuning knowledge recommended for boosted or nitrous applications.