Terminator X Max puts complete control of a GM LS1/LS6 engine in one compact ECU, replacing a junkyard controller with real-time fuel learn, self-learning fuel strategies, and Holley's proven EFI tuning technology, plus 4L60E/4L80E transmission control. This kit includes a USB/CAN tuning cable in place of the 3.5 in. handheld and uses the free Terminator X software for setup.
Key Features:
- Built for GM LS1/LS6 engines with 24x crank reluctor, EV6 injectors, and 4L60E/4L80E transmission control
- Real-time fuel map learn takes the guesswork out of tuning the base fuel table
- High-impedance injector drivers safely power most stock LS and Holley EFI injectors
- Bosch LSU 4.9 wideband oxygen sensor included for accurate AFR reading and tuning control
- On-board 1-bar MAP sensor, ideal for N/A or nitrous combinations
- 4 programmable inputs and 4 programmable outputs for fans, boost control, nitrous, and more
- Boost control and nitrous control tables, plus advanced custom tables
- On-board diagnostic LEDs for ECU power, engine run, wideband status, TPS calibration, crank and cam signal
- Includes USB/CAN tuning cable for real-time configuration and tuning via laptop
- Compact ECU mounts virtually anywhere (diagnostic LEDs must face up)
- Plug-and-play compatible with Holley EFI gauges, shift lights, modules, and digital/pro dashes
- Free EFI tuning software for full laptop access
- Includes 24x LS main harness, EV6 injector harness, 4L60E/4L80E transmission control harness, ECU, main power harness, wideband oxygen sensor, I/O harness, and vacuum adapters
Specifications:
- Engine: GM LS1/LS2/LS6
- Crank Reluctor: 24x
- Ignition Type: GM LS 24x
- Injector Connector: USCAR (EV6)
- Drive-By-Wire: No
- Transmission Control: 4L60E/4L80E
- Handheld Included: No — USB/CAN tuning cable instead
- Color: Black
- Part Number: 550-919T
Not recommended for 4x4 applications with electronic transfer cases, or for 4L6X transmissions from model year 1995 or earlier. Not intended for marine use, though it can be used off-road with proper mounting and wiring protection.
FAQ
What's the difference between 550-919T and 550-919?
550-919T uses a USB/CAN tuning cable and the free Terminator X software instead of the 3.5 in. touchscreen handheld included with 550-919.
What engines does it fit?
GM LS1/LS6 engines with a 24x crank reluctor and EV6 injectors.
Does it control the transmission?
Yes, it includes 4L60E/4L80E transmission control.
Can this be used on a 4x4 vehicle?
It's not recommended for 4x4 applications with electronic transfer cases.
