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Premium Select Holley Efi Terminator X Stealth Gm Ls 4150 - Black 550-1021 Web Only Deal [YaiosK3E]

$89.99 $287.99 -69%

Holley EFI Terminator X Stealth GM LS 4150 The Holley EFI Terminator X Stealth GM LS 4150 is a cutting-edge EFI system designed for high-performance LS engines. This system boasts a 24X crank and supports up to 650HP, making it perfect for those seek

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Premium Select Holley Efi Terminator X Stealth Gm Ls 4150 - Black 550-1021 Web Only Deal [YaiosK3E]

Holley EFI Terminator X Stealth GM LS 4150

The Holley EFI Terminator X Stealth GM LS 4150 is a cutting-edge EFI system designed for high-performance LS engines. This system boasts a 24X crank and supports up to 650HP, making it perfect for those seeking maximum power and efficiency. With four 100lb./hr. injectors, this system ensures a seamless and robust fuel delivery, enhancing your engine's performance. The Terminator X Stealth 4150 Kits are compatible with both 24x and 58x LS engines, offering versatility and convenience. Key features include plug-and-play Transmission control for GM Transmissions, an internal 1bar MAP sensor, and a stealth installation design. The system also comes with a high-resolution full-color touchscreen for easy setup, tuning, and gauge displays.

Product Specifications and Technical Details

The Holley EFI Terminator X Stealth GM LS 4150 is packed with advanced features and specifications. It features an integrated ignition timing control, compatible with factory LS coil sub harness and OEM LS coils, eliminating the need for external boxes or modules. The system includes a Genuine Bosch LSU 4.9 Wideband Oxygen Sensor for real-time fuel map learning. It offers 4 inputs and 4 outputs for additional sensors, triggers, and accessories. The air entry is machined to fit most stock-style air cleaners, and the wiring exits below the fuel injector bowls for a completely stealth installation. This system is available in three finishes: shiny, black, and gold, ensuring it complements your vehicle's aesthetics. It is also compatible with Holley EFI digital dashes, gauges, and fuel system accessories.

Practical Uses and Benefits

The Holley EFI Terminator X Stealth GM LS 4150 is ideal for enthusiasts and professionals looking to upgrade their LS engines. Its self-tuning ECU makes it accessible to users without extensive computer or tuning knowledge. The simple calibration wizard guides you through the initial setup, creating the base map and starting the tuning process automatically. This system is perfect for daily drivers, track enthusiasts, and those looking to achieve maximum power and efficiency. The integrated features and easy installation make it a valuable addition to any LS engine, offering a seamless and powerful driving experience.

What Our Customers Say

January 25, 2026

Absolutely no complaints!

I'm extremely happy with this very good purchase.

- Rose N..

January 25, 2026

Absolutely no complaints!

It’s a high-quality tool. I'm extremely happy.

- Israel D..

January 25, 2026

Absolutely no complaints!

A great tool that is so very easy to handle.

- Teagan X..

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