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    Sale!

    Holley EFI Holley EFI Terminator X Stealth GM LS 4150 - Black 550-1061

    Vendor: Holley EFI
    SKU: GVMR_550-1061
    26% Off
    Sale Price $2,023.95 Regular Price $2,752.95
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    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.


    Holley EFI Holley EFI Terminator X Stealth GM LS 4150 - Black 550-1061


    Specifications:

    Description_INV TERMX STEALTH 4150, 4 INJ, LS 58X, BLACK
    Description_DES Holley EFI Terminator X Stealth GM LS 4150 - Black
    Description_EXT 58X Crank - 4 Injectors - 650 HP
    Description_MKT 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.
    Description_FAB Terminator X Stealth 4150 Kits for either 24x or 58x LS engines
    Description_FAB Supports up to 650HP with Four 100lb./hr. Injectors
    Description_FAB Terminator X Max kits provide plug and play Transmission control for GM Transmissions
    Description_FAB Internal 1bar MAP sensor, built into the Terminator X ECU.
    Description_FAB All of the wiring exits below the fuel injector bowls, for a completely stealth installation
    Description_FAB Air entry machined to fit most stock style air cleaners with air cleaner locator provisions
    Description_FAB External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as 12-886
    Description_FAB Integrated ignition timing control â€"Plug and play with factory LS coil sub harness and OEM LS coils â€" no external boxes/modules needed to run Coil Near Plug
    Description_FAB High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
    Description_FAB 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!
    Description_FAB Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
    Description_FAB 4 Inputs â€" 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake (Fuel and Oil Pressure Inputs are pre-terminated)
    Description_FAB 4 Outputs â€" Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More
    Description_FAB The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!
    Description_FAB OEM Style TPS/IAC, for years of dependable service
    Description_FAB Available in 3 finishes: Shiny, Black and Gold
    Description_FAB Compatible with Holley EFI digital dashes, gauges and fuel system accessories


    Shipping Policy

    Cancellations

    Once an order is placed, in most cases it cannot be cancelled as they are sent for fulfillment almost immediately after receiving the order. If there is an ability to cancel the order, the buyer is responsible for the transaction fees charged from the transaction.

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    In-stock orders are typically processed and shipped within 1–2 business days of receiving payment, unless otherwise stated on the product page. Orders placed on weekends or holidays will be processed on the next business day.

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    International Shipping

    For international orders, please be aware that customs duties, taxes, and other fees may apply upon delivery. These additional charges are the responsibility of the recipient and are not included in the shipping cost paid at checkout. Please check with your local customs office for information on potential fees before placing your order.

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    Return Policy

    Return Period

    You have up to 30 days from the date of purchase to return eligible items.

    Condition of the Item

    A 20% restocking fee will apply to cover inspection, processing, and repackaging costs.

    Items must be returned in new, unused condition and include all original packaging, hardware, and documentation.

    Return Shipping

    The cost of return shipping is the responsibility of the buyer unless the item was received damaged, defective, or incorrect.

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    Before returning any item, please contact our customer service team to obtain a Return Merchandise Authorization (RMA) number. Items returned without an RMA may not be accepted.

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    Once the returned item is received and inspected, we will initiate the refund process. Please allow 2–5 days for the refund to be processed and credited to the original payment method. Bank processing times may vary.

    Damaged or Defective Items

    If you receive a damaged, defective, or incorrect item, contact us immediately for assistance. We’ll work quickly to resolve the issue or send a replacement.

    Final Sale Items

    Certain items may be marked as Final Sale and are not eligible for return or exchange. These will be clearly noted on the product page.

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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