Holley 550-931T Terminator X Max MPFI Controller Kit Features:

• Simple Plug-and-Play engine controller for GM LS engines and will also control 4L60E and 4L80E automatic transmissions.
• CAN/BUS Tuning Cable allows tuning with the use of a laptop computer (sold separately)
• Real-Time Self-Learning fuel maps require no complicated tuning knowledge (Holley EFI software suite is included for advanced users with laptops)
• On-board Multi-Color LED Diagnostic allows quick troubleshooting on critical issues for ECU Power, Engine Running, Wideband Status, TPS Calibration, Crank Signal, Cam Signal. 
• Built-in 1bar MAP Sensor with 1/8, 1/4, & 3/16 in. vacuum hose adapters included. For boosted applications, the internal sensor can be disabled to run an external LS style MAP sensor (not included) with terminated harness and connector (included).
• 4 Inputs - 12-volt, Ground, 5-volt, and Frequency can be used for activation triggers, trans brake, and to add extra pressure sensors.
• 4 Outputs - Ground and PWM can be used for electric fans, boost control, nitrous control,  idle air control kit, and many more accessories. 
• Boost Controls - Ability to control boost vs time, boost vs. gear, boost vs. RPM, boost vs. speed, boost vs. safeties
• Nitrous Controls - Single Channel Wet or Dry, Progressive or Non-Progressive, rich/lean safeties, and target closed-loop AFR
• Advance Tables - 4x 1D Table, 1x 1D Gear Table, 4x 2D Table, 1x 2D per Gear Table.  Can be used for custom tables for flex fuel sensor, fuel pressure safety, or oil pressure safety.
• Bosch LSU 4.9 Wideband for precision reading and tuning control (will not function with LSU 4.2 oxygen sensors
• High Impedance Injector Driver powers most GM stock LS and Holley EFI injectors. (Use of low impedance injectors will damage the ECU)
• Holley EFI Accessories are mostly compatible (analog-style gauges, shift lights, and others.)

Note: To calibrate and tune a laptop is required to run the advanced tuning software. For simple setup wizard and tuning without a laptop purchase a kit that has the included 3.500 in. handheld touchscreen.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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