Holley EFI Terminator X Stealth 4500 - Shiny
$2,849.95
550-1070
Couldn't load pickup availability
Shop safely
Secure shopping experience with safe and trusted payment methods.
Gold - 58X Crank - Trans Control - 650 HP - 3.5 in. Touchscreen
Overview
The Terminator X Stealth 4150 EFI system from Holley features 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 features fuel maps that self-learn and integrated ignition timing control, yielding improved idle stability, drivability, and horsepower at wide-open throttle! Did we mention that the Stealth 4150 also includes transmission kick down provisions for GM TH350/400, 200R4/700R4 and Ford C4/C6 applications? Terminator X Max kits provide plug and play Transmission control for GM 4L60 and 4L80 Transmissions.
Not recommended for 4x4 applications with electronic transfer cases. Not compatible with 4L6X transmissions from model year 1995 or before due to year-by-year changes in converter lockup and downshift strategy.
Features:
- Bolt on 4500 Flange Carburetor Replacement
- Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr Injectors
- 2.125??? Throttle Plates, Flow 1440 CFM for large cubic inch engines
- Gen 3 Ultra Dominator Style 4 Bolt Air Cleaner Flange offering a variety of air cleaner options
- External fuel pressure regulator required, such as 12-848
- Integrated ignition timing control
- High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
- Simple Calibration Wizard (answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required!
- Self-tuning ECU means you don??????t have to be a computer/tuning wiz to have EFI!
- OEM Style TPS/IAC, for years of dependable service.
- Included weld-in O2 sensor bung for the exhaust ensures a leak free oxygen sensor installation
- Built in 1bar MAP Sensor, vacuum hose adapters included (1/8th ???? ?? and 3/16ths) - or for Boosted applications, you can disable the internal MAP sensor, and utilize an external MAP Sensor, the harness comes with the connector terminated, making the install
- Plug and play with Holley EFI Accessories, such as the 12.3??? and 6.86??? Pro Dash; CAN EGT; and Digital Analog style EFI gauges
- Available in 2 finishes, Shiny and Black
Links
Instruction Sheet
Parts Guide

















Shopping Safely
We prioritize your safety and security. Here's how we ensure a secure shopping experience:
1. Secure Transactions: We use advanced encryption to protect your personal and payment information, ensuring it is safely transmitted and safeguarded.
2. Trusted Payment Gateways: Our store integrates with trusted payment gateways, ensuring your transactions are processed securely and efficiently.
3. Data Privacy: Your privacy is our top priority. We follow strict data protection policies to keep your personal information confidential and secure.
4. Secure Platform: Shopify provides robust security features and continuous monitoring against vulnerabilities, ensuring a safe shopping environment.
5. Verified Merchants: We are a verified merchant on Shopify, committed to providing authentic and high-quality products.
6. Transparent Policies: Our clear return, refund, and shipping policies provide peace of mind, knowing we stand behind our products.
7. Customer Support: Our dedicated customer support team is ready to assist with any concerns or questions you may have.
Shop confidently at our store, where your safety and satisfaction are our top priorities.
$2,849.95
Have Questions?
Selling fast!
Get yours while you can.