This Terminator X Max configuration is built for Gen IV GM LS truck engines and LS2/LS3 applications, adding 4L60E/4L80E transmission control on top of the same real-time fuel learning, high-impedance injector drivers, and onboard wideband tuning found across the Terminator X Max lineup.
Key Features:
- Built for Gen IV GM LS truck engines (4.8/5.3/6.0) and LS2/LS3 with 58x crank, 4x cam, and EV1 injectors
- Includes 4L60E/4L80E automatic transmission control
- Real-time fuel map learning removes guesswork from base fuel tuning
- High-impedance injector drivers for stock LS and Holley EFI injectors
- Onboard Bosch LSU 4.9 wideband for accurate AFR reading
- Integrated 1-bar MAP sensor with vacuum hose adapters (1/8"-1/4" and 3/16")
- 4 programmable inputs and 4 programmable outputs for fans, boost control, nitrous, IAC, and more
- Boost control vs. time, gear, RPM, or speed, with boost safeties
- Nitrous control: single channel, progressive or non-progressive, with rich/lean safeties
- Advanced custom 1D/2D and per-gear tables
- Onboard diagnostic LEDs for critical engine issues at a glance
- 3.5" touchscreen handheld with calibration wizard and internal data-logging
- Plug-and-play compatible with Holley EFI gauges, shift lights, digital/pro dashes
- Free EFI tuning software for full laptop control
Specifications:
- Engine: Gen IV GM LS truck (4.8/5.3/6.0), LS2/LS3
- Crank Reluctor: 58x
- Ignition Type: GM LS 58x
- Injector Connector: Jetronic/Minitimer (Bosch EV1)
- Drive-By-Wire: No
- Transmission Control: 4L60E/4L80E
- MAP Sensor: 1-bar, onboard
- Handheld Included: Yes
- Includes: 58x/4x LS Engine Main Harness, EV1 Injector Harness, 4L60E/4L80E Transmission Control Harness, Terminator X MAX ECU, ECU Main Power Harness, Bosch LSU 4.9 Wideband O2 Sensor, I/O Harness, vacuum adapters
- Warning: California Proposition 65
- Part Number: 550-920
Not recommended for 4x4 applications with electronic transfer cases. Not compatible with 4L6X transmissions from model year 1995 or earlier due to converter lockup and downshift strategy differences. Not recommended for marine use.
FAQ
What engines does the 550-920 Terminator X Max support?
Gen IV GM LS truck engines (4.8L, 5.3L, 6.0L) and LS2/LS3, with a 58x crank/4x cam signal and EV1 injectors.
Does this version include transmission control?
Yes, it controls 4L60E or 4L80E automatic transmissions.
Is it compatible with 4x4 trucks?
It's not recommended for 4x4 applications with electronic transfer cases.
Will it work with an older 4L60E transmission?
No, it's not compatible with 4L6X transmissions built in model year 1995 or earlier due to differences in converter lockup and downshift strategy.
Does it support Drive-By-Wire throttle bodies?
No, this configuration does not include Drive-By-Wire control.
What's included in the box?
The 58x/4x LS main harness, EV1 injector harness, transmission control harness, ECU, wideband O2 sensor, I/O harness, and vacuum adapters.
