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    Sale!

    Holley EFI Terminator LS MPFI Kit, 4.8/5.3/6.0 Early Truck, 24x Reluctor, Fuel & Spark | 550-614

    Vendor: Holley EFI
    Part Number: 550-614
    Save $812
    Sale Price $2,506.95 Regular Price $3,318.95

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    The Holley EFI Terminator LS MPFI Kit brings the self-tuning power of Terminator EFI to GM's popular LS engines in a bolt-on package. The 550-614 kit controls fuel and spark through Terminator's 3.5" touchscreen — no laptop required. Answer a few basic setup questions and the system is ready to drive.

    Key Features:

    • Self-tuning EFI system for 1997-2007 4.8/5.3/6.0 truck engines with 24x crank reluctor
    • Controls fuel and spark
    • Includes everything needed to control a stock or mildly modified LS engine
    • Bosch wideband oxygen sensor included
    • Pre-calibrated for no-hassle installation and tuning
    • Fully adjustable through the included 3.5" full-color touchscreen handheld
    • No laptop required for setup or tuning

    Specifications:

    • Engine Platform: 1997-2007 GM 4.8/5.3/6.0 truck engines
    • Crank Reluctor: 24x
    • Injector Connector: Multec 2
    • Handheld Included: Yes, 3.5" touchscreen
    • Control Options: Fuel, Spark
    • Color: Black
    • Part Number: 550-614

    FAQ

    Does this kit require a laptop to set up?

    No. The system is configured and tuned through the included 3.5" touchscreen handheld — answer a few basic questions and drive.

    What engines is this kit designed for?

    It's built for 1997-2007 GM 4.8/5.3/6.0 truck engines equipped with a 24x crank reluctor.

    What does the Terminator LS kit control?

    This kit (550-614) controls fuel and spark.

    Is a wideband oxygen sensor included?

    Yes, a Bosch wideband oxygen sensor is included for closed-loop fuel control.

    Is this kit suitable for a modified engine?

    It's designed for stock or mildly modified LS combinations.

    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy

    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy

    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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