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    Sale!

    Holley EFI Holley EFI Terminator X Max - 24x Early Truck with 6L80 Control 550-917-6

    Vendor: Holley EFI
    Part Number: 550-917-6
    Save $313
    Sale Price $2,499.95 Regular Price $2,812.95

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

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    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
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    A departure from traditional Holley EFI transmission control, the Terminator X Max ECU allows the ability to use 2007+ GM 6L80E and 6L90E transmissions by communicating via CAN with the internal TCM (Transmission Control Module). The supplied Holley EFI OBDII Transmission Tuning Handheld is used to adjust Shift Points, Tire Size and Gear Ratio. The Terminator X V3 Software provides the ability to dial in Torque Management to optimize the desired shifting characteristics when using a 6L80/90E Transmission. Terminator X V3 software also allows a user to control the Secondary Shift Mode within the Transmission TCM and allows use of Tap Up/Down Shifting.


    Holley EFI Holley EFI Terminator X Max - 24x Early Truck with 6L80 Control 550-917-6


    Specifications:

    Description_INV TERMINATOR X MAX MPFI 6L80 CONTROL
    Description_ASC 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. ECU is not recommended for marine applications, but can be used on off-road applications as long as you choose a safe location, keep it dry, protect from heat, and ensure proper wiring management.
    Description_DES Holley EFI Terminator X Max - 24x Early Truck with 6L80 Control
    Description_EXT 24x Crank - 1x Cam - Multec 2 Injectors - 6L80/90 Transmission Control - 3.5-inch Touchscreen
    Description_MKT Take control of your LS engine and 6L80 transmission with our Terminator X Max bundle kits! Best of all, you can save up to $90 by purchasing our kits versus the separate components. Part numbers 550-917-6, 550-918-6 and 550-928-6 add GM 6L80 and 6L90 control to the ever growing lineup of high performance Terminator X Products.
    Description_MKT Terminator X Max comes fully loaded with engine tunes for common LS engine combinations to get you out of the garage and on the road/track fast. The 3.5-inch touch screen LCD handheld contains an easy to use calibration wizard as well as tuning and gauge display functions. Also included is Holley EFI's industry-leading, easy to use software suite that allows full laptop access for advanced users. Whether you are building a budget beater or a boosted race car, Terminator X MAX has the features and technology you need at a price that won't break the bank! Additional features include real-time fuel learn, high impedance injector drivers, an integrated 1 BAR MAP sensor, and 4 programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more.
    Description_MKT A departure from traditional Holley EFI transmission control, the Terminator X Max ECU allows the ability to use 2007+ GM 6L80E and 6L90E transmissions by communicating via CAN with the internal TCM (Transmission Control Module). The supplied Holley EFI OBDII Transmission Tuning Handheld is used to adjust Shift Points, Tire Size and Gear Ratio. The Terminator X V3 Software provides the ability to dial in Torque Management to optimize the desired shifting characteristics when using a 6L80/90E Transmission. Terminator X V3 software also allows a user to control the Secondary Shift Mode within the Transmission TCM and allows use of Tap Up/Down Shifting.
    Description_FAB Included TCM handheld tuner with integrated wizard is required for setup in conjunction with the Terminator X 3.5-inch Handheld. Terminator X V3 software to unlock optional tuning parameters.
    Description_FAB Supports – Shift Mode – Tap Up / Tap Down, and Torque Management
    Description_FAB Four loose wires:
    Description_FAB o Power (Red) – Supplies power to the transmission solenoids. This should be connected directly to the battery, or a constant battery source capable of supplying 5 amps
    Description_FAB o Ground (Black) – Connect to a good chassis/engine ground source
    Description_FAB o Brake Switch (Light Blue/White) – Wired to the brake light switch. This must be installed to a +12v source (as most brake light switches are)
    Description_FAB o Park/Neutral Safety (Yellow) – Circuit for starter solenoid. When the transmission is in Park or Neutral this Yellow Wire will be Grounded (-). When the transmission is in gear this circuit will be open.
    Description_FAB 550-917-6 For GM LS 4.8/5.3/6.0 Truck Engines with 24x crank reluctor, 6L80/90e Transmission Control, and Multec 2 Injectors
    Description_FAB Real-Time fuel map learn, takes the guess work out of tuning your base fuel table
    Description_FAB High Impedance Injector Drivers will safely power most Stock LS injectors, and Holley EFI Injectors. Injector support chart provided in the instructions (Will not control Low Impedance Injectors)
    Description_FAB All of the new Terminator X Max systems utilize the Bosch LSU 4.9 wideband to relay AFR information to the ECU for accurate reading and precise tuning control.
    Description_FAB On-Board 1bar MAP sensor, is perfect for N/A or Nitrous engine combos. If your combination requires a 2+Bar, we recommend GM 12592525, and our adapter part number 558-416.
    Description_FAB MAP Sensor vacuum hose adapters (1/8th – ¼ and 3/16ths)
    Description_FAB 4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake
    Description_FAB 4 Outputs – Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More
    Description_FAB Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties
    Description_FAB Nitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR
    Description_FAB Advanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table, can be used for any custom tables you can dream up, such as Flex Fuel Sensor Offset Table, or a custom fuel or oil pressure safety!
    Description_FAB On-Board Diagnostic LEDS for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal –Cam Signal. Allow you to identify any Critical engine issues at a glance
    Description_FAB The included 3.5-inch Touchscreen Handheld contains a calibration wizard, that allows you to quickly build a base tune for any LS engine. Additionally, the handheld provides internal data-logging and a fully customizable gauge display.
    Description_FAB The compact ECU size allows you to mount it virtually anywhere. Remember, diagnostic LEDS must face up!
    Description_FAB Plug and play compatible with multiple Holley EFI accessories including our gauges, shift lights, various modules, and digital and pro dashes (Holley P/N's 553-106, 553-111, and 553-112)
    Description_FAB Free EFI Tuning Software for complete control of your Terminator X power plant
    Description_FAB Recommended Pedal part number - 10379038
    Brand Holley EFI
    Category Air and Fuel Delivery
    Color Black
    Crank Reluctor 24x
    Drive-By-Wire No
    Emission Code 3
    Engine Gen III GM Truck
    Fuel Injectors Included No
    Fuel Pressure Regulator Included No
    Fuel Pump Included No
    Grade Type Performance
    Handheld Included Yes
    Idle Air Control Motor Included No
    Ignition Type GM LS 24x
    Injector Connector Multec 2
    Intake Manifold Included No
    30 No
    Product Type EFI System
    Terminator LS Options Fuel, Spark, Transmission
    Throttle Position Sensor Included No
    Transmission 6L80/6L90E
    Warning California Proposition 65
    Wet Nitrous Control Yes
    Brand Holley EFI
    Category Air and Fuel Delivery
    Color Black
    Crank Reluctor 24x
    Drive-By-Wire No
    Emission Code 3
    Engine Gen III GM Truck
    Fuel Injectors Included No
    Fuel Pressure Regulator Included No
    Fuel Pump Included No
    Grade Type Performance
    Handheld Included Yes
    Idle Air Control Motor Included No
    Ignition Type GM LS 24x
    Injector Connector Multec 2
    Intake Manifold Included No
    30 No
    Product Type EFI System
    Terminator LS Options Fuel, Spark, Transmission
    Throttle Position Sensor Included No
    Transmission 6L80/6L90E
    Warning California Proposition 65
    Wet Nitrous Control Yes
    Description_INV TERMINATOR X MAX MPFI 6L80 CONTROL
    Description_ASC 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. ECU is not recommended for marine applications, but can be used on off-road applications as long as you choose a safe location, keep it dry, protect from heat, and ensure proper wiring management.
    Description_DES Holley EFI Terminator X Max - 24x Early Truck with 6L80 Control
    Description_EXT 24x Crank - 1x Cam - Multec 2 Injectors - 6L80/90 Transmission Control - 3.5-inch Touchscreen
    Description_MKT Take control of your LS engine and 6L80 transmission with our Terminator X Max bundle kits! Best of all, you can save up to $90 by purchasing our kits versus the separate components. Part numbers 550-917-6, 550-918-6 and 550-928-6 add GM 6L80 and 6L90 control to the ever growing lineup of high performance Terminator X Products.
    Description_MKT Terminator X Max comes fully loaded with engine tunes for common LS engine combinations to get you out of the garage and on the road/track fast. The 3.5-inch touch screen LCD handheld contains an easy to use calibration wizard as well as tuning and gauge display functions. Also included is Holley EFI's industry-leading, easy to use software suite that allows full laptop access for advanced users. Whether you are building a budget beater or a boosted race car, Terminator X MAX has the features and technology you need at a price that won't break the bank! Additional features include real-time fuel learn, high impedance injector drivers, an integrated 1 BAR MAP sensor, and 4 programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more.
    Description_MKT A departure from traditional Holley EFI transmission control, the Terminator X Max ECU allows the ability to use 2007+ GM 6L80E and 6L90E transmissions by communicating via CAN with the internal TCM (Transmission Control Module). The supplied Holley EFI OBDII Transmission Tuning Handheld is used to adjust Shift Points, Tire Size and Gear Ratio. The Terminator X V3 Software provides the ability to dial in Torque Management to optimize the desired shifting characteristics when using a 6L80/90E Transmission. Terminator X V3 software also allows a user to control the Secondary Shift Mode within the Transmission TCM and allows use of Tap Up/Down Shifting.
    Description_FAB Included TCM handheld tuner with integrated wizard is required for setup in conjunction with the Terminator X 3.5-inch Handheld. Terminator X V3 software to unlock optional tuning parameters.
    Description_FAB Supports – Shift Mode – Tap Up / Tap Down, and Torque Management
    Description_FAB Four loose wires:
    Description_FAB o Power (Red) – Supplies power to the transmission solenoids. This should be connected directly to the battery, or a constant battery source capable of supplying 5 amps
    Description_FAB o Ground (Black) – Connect to a good chassis/engine ground source
    Description_FAB o Brake Switch (Light Blue/White) – Wired to the brake light switch. This must be installed to a +12v source (as most brake light switches are)
    Description_FAB o Park/Neutral Safety (Yellow) – Circuit for starter solenoid. When the transmission is in Park or Neutral this Yellow Wire will be Grounded (-). When the transmission is in gear this circuit will be open.
    Description_FAB 550-917-6 For GM LS 4.8/5.3/6.0 Truck Engines with 24x crank reluctor, 6L80/90e Transmission Control, and Multec 2 Injectors
    Description_FAB Real-Time fuel map learn, takes the guess work out of tuning your base fuel table
    Description_FAB High Impedance Injector Drivers will safely power most Stock LS injectors, and Holley EFI Injectors. Injector support chart provided in the instructions (Will not control Low Impedance Injectors)
    Description_FAB All of the new Terminator X Max systems utilize the Bosch LSU 4.9 wideband to relay AFR information to the ECU for accurate reading and precise tuning control.
    Description_FAB On-Board 1bar MAP sensor, is perfect for N/A or Nitrous engine combos. If your combination requires a 2+Bar, we recommend GM 12592525, and our adapter part number 558-416.
    Description_FAB MAP Sensor vacuum hose adapters (1/8th – ¼ and 3/16ths)
    Description_FAB 4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake
    Description_FAB 4 Outputs – Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More
    Description_FAB Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties
    Description_FAB Nitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR
    Description_FAB Advanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table, can be used for any custom tables you can dream up, such as Flex Fuel Sensor Offset Table, or a custom fuel or oil pressure safety!
    Description_FAB On-Board Diagnostic LEDS for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal –Cam Signal. Allow you to identify any Critical engine issues at a glance
    Description_FAB The included 3.5-inch Touchscreen Handheld contains a calibration wizard, that allows you to quickly build a base tune for any LS engine. Additionally, the handheld provides internal data-logging and a fully customizable gauge display.
    Description_FAB The compact ECU size allows you to mount it virtually anywhere. Remember, diagnostic LEDS must face up!
    Description_FAB Plug and play compatible with multiple Holley EFI accessories including our gauges, shift lights, various modules, and digital and pro dashes (Holley P/N's 553-106, 553-111, and 553-112)
    Description_FAB Free EFI Tuning Software for complete control of your Terminator X power plant
    Description_FAB Recommended Pedal part number - 10379038


    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.
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    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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