Holley 558-499 EFI Terminator X Max Transmission Kit - GM 6L80/6L90

Requires Terminator X Max - Requires V3 Build 100 or later (Does not support 4WD)

Part Number: 558-499

The Terminator X Max ECU allows the ability to use 2007+ GM 6L80 and 6L90E transmissions by communicating via CAN with the internal TCM (Transmission Control Module). The supplied OBDII transmission tuning handheld is used to adjust shift points, tire size and gear ratios. 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. The Terminator X V3 PC Software, you can have virtual torque management tables, virtual TPS tables for dialing in shift characteristics, and drive by wire (DBW) and timing torque reduction tables for smoother shifts. Within the handheld, you'll find support for Tap Up/Tap Down, secondary shift mode, read and clear TCM fault codes, and raise and lower MPH or RPM shift points. 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.

Features and Benefits

• Plug and play with any engine controlled by a Terminator X Max ECU
• V3 software unlocks more tuning potential and driveability options
• Supports Shift Mode, Tap Up/Tap Down, and Torque Management
• Included 3.5" LCD touchscreeen handheld tuner with integrated setup wizard

Terminator X V3 software is not compatible with Terminator X V1 or V2 ECU Firmware. To use V3 software with an older ECU version, the ECU and handheld must be updated to V3 firmware. Opening a Terminator X V1 or V2 calibration with Terminator X V3 software will update the calibration from V1 or V2 to V3. A V3 calibration cannot be loaded into a V1 or V2 ECU. Terminator X V1 or V2 calibration cannot be used in a Terminator X ECU with V3 Firmware. The 3.5" touchscreen can be used to update the ECU and the Calibration from V1 or V2 to V3 when using Handheld Firmware V3 Build xx (tslcd35-terx.3.0.xx.fwu) or later. For specifications, Tire Size Diameter: 26" - 38" and Gear Ratio: 3.23 - 5.13. System does not support 4WD.