Holley Efi Terminator X Stealth Gm Ls 58X - Black (4 Injectors)

Introducing the Holley Terminator X Stealth 4150 EFI system, featuring 4, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The Terminator X ECU incorporates self-learning fuel maps and integrated ignition timing control for enhanced idle stability, drivability, and wide-open throttle horsepower. Notably, the Stealth 4150 includes transmission kickdown provisions for GM TH350/400, 200R4/700R4, and Ford C4/C6 applications. Terminator X Max kits provide convenient plug-and-play transmission control for GM 4L60 and 4L80 Transmissions.

Key Features:

• Terminator X Stealth 4150 Kits available for 24x or 58x LS engines


• Supports up to 650HP with Four 100lb./hr. Injectors


• Terminator X Max kits offer plug-and-play Transmission control for GM Transmissions


• Internal 1bar MAP sensor integrated into the Terminator X ECU


• Stealthy wiring exits below the fuel injector bowls for a discreet installation


• Air entry machined to fit most stock-style air cleaners with air cleaner locator provisions


• External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as Holley part # 12-886


• Integrated ignition timing control – Plug and play with factory LS coil sub-harness and OEM LS coils, eliminating the need for external boxes/modules for Coil Near Plug


• High-Resolution Full-Color Touchscreen for Initial Setup, Tuning, and Gauge Displays


• Simple Calibration Wizard for easy tuning without a laptop


• Self-tuning ECU eliminates the need for advanced computer/tuning knowledge


• 4 Inputs (12v, Ground, 5v, and Frequency) for additional pressure sensors or activation triggers


• 4 Outputs (Ground, PWM - ) for accessories like fans, boost control, nitrous control, IAC Kit, and more


• Genuine Bosch LSU 4.9 Wideband Oxygen Sensor for real-time Fuel Map Learn


• OEM Style TPS/IAC ensures years of dependable service


• Available in three finishes: Shiny, Black, and Gold


• Compatible with Holley EFI digital dashes, gauges, and fuel system accessories