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Holley Terminator X MAX GM 6L80/90 Transmission Kits 558-499 Automatic Controllers, EFI, 6L80, 6L90 Transmissions, Hand-held Tuner, Plug-and-Play, for Max ECU, Each

Holley Terminator X MAX GM 6L80/90 Transmission Kits 558-499 Automatic Controllers, EFI, 6L80, 6L90 Transmissions, Hand-held Tuner, Plug-and-Play, for Max ECU, Each

A$1,261.59
LAST ONE! Est Ship 4-7 days. In stock at 2 locations (10 available)

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Description

Transmission Controller - Terminator X-Max - Digital Display / Harness - 4L80 / 4L90 - Kit


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:14:59

Data: v4.2 - Upd: 2026-11-08 06:35:08

Features

Vehicle Compatibility and Return Conditions.

This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.

Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.

Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.

(keyword: tuner)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Holley, Hilborn, Holley Efi, Retrobright, Terminator X
StreetFX SKU hly558-499
SFX Item ID 4782291
Accounting SKU hly-558-499
Manufacturer SKU 558-499
Manufacturer UPC 090127788370
Alternative References 558-499, HLY-558-499, HOL558-499

Automatic Transmission Controllers, Holley EFI, GM 6L80, 6L90 Transmissions, Hand-held Tuner, Plug-and-Play, for Terminator X Max ECU, Each

Add GM 6L80/90E transmission control to any existing vehicle utilizing a Terminator X Max ECU. 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 hand-held is used to adjust shift points, tire size and gear ratio. Terminator X V3 software provides the ability to dial in torque management to optimize the desired shifting characteristics when using a 6L80/90E transmission. The software also enables you to control the secondary shift mode within the transmission TCM and allows use of tap Up/Down shifting.

Within Terminator X V3 PC Software:
--- Virtual Torque Management Tables
--- Virtual TPS Tables to dial in shift characteristics regardless of engine
--- DBW and Timing torque reduction tables to create smooth shifts

Within the Holley EFI OBDII Transmission Tuning Hand-held:
--- Ability to read and clear TCM fault codes
--- Ability to raise and lower shift points by MPH or RPM
--- Support for Tap Up/Tap Down & Transmission's Secondary Shift Mode

If you currently have a Terminator X ECU, upgrading to a Terminator X Max ECU can be easily done by plugging your main harness into the Max ECU and re uploading your existing calibration.

Holley Terminator X MAX GM 6L80/90 transmission kit features:
• Included TCM hand-held tuner with integrated wizard is required for setup in conjunction with the Terminator X 3.5 in. hand-held. Terminator X V3 software unlocks optional tuning parameters.
• Plug-and-play with any engine controlled by a Terminator X Max ECU
• Supports: Shift Mode - Tap Up / Tap Down, and torque management
• Four loose wires:
--- 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
--- Ground (Black): Connect to a good chassis/engine ground source
--- Brake Switch (Light Blue/White): Wired to the brake light switch. This must be installed to a +12 V source (as most brake light switches are)
--- 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.

Product Attributes
BrandHolley
Manufacturer's Part Number558-499
Part TypeAutomatic Transmission Controllers
Product LineHolley Terminator X MAX GM 6L80/90 Transmission Kits
UPC00090127788370
RemanufacturedNo
QuantitySold individually.
Special AttentionFor use with Terminator X MAX ECU's. Requires Terminator X V3 Build 100 or later firmware.

Compatibility

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