Take command of your LS engine with Terminator X Max! Reject the notion of settling for a salvage yard ECU burdened with a cumbersome tuning interface when you can attain absolute control over your engine. Enjoy self-learning fuel strategies and the proven, race-winning technology of Holley EFI—all at an affordable price!
Terminator X Max boasts real-time fuel learning, high-impedance injector drivers, an integrated 1bar MAP sensor, and 4 programmable inputs and outputs. Ideal for electric fans, boost control solenoids, progressive nitrous control, and more. Part number 550-916 also offers 4L60E or 4L80E Transmission control. Fully loaded with base maps for common LS engine combinations, Terminator X Max ensures a swift transition from the garage to the road or track. Additionally, Holley EFI's industry-leading software suite, accessible via a full laptop, is included for advanced users. Whether you're crafting a budget-friendly cruiser or a boosted race car, Terminator X Max provides the features and technology you need at a price that won't break the bank!
- For GM LS1/LS6 engines with 24x crank reluctor with EV1 injectors and 4L60E/4L80E transmissions.
- Real-time fuel map learning eliminates guesswork in tuning your base fuel table.
- High-impedance Injector Drivers power most Stock LS injectors, and Holley EFI Injectors safely. Injector support chart is provided in the instructions (Does not control Low Impedance Injectors).
- All new Terminator X Max systems utilize the Bosch LSU 4.9 wideband to relay AFR information to the ECU for accurate readings and precise tuning control.
- On-board 1-bar MAP sensor is perfect for N/A or Nitrous engine combos. If your combination requires a 2+Bar, we recommend GM 12592525, and our adapter part number 558-416.
- MAP Sensor vacuum hose adapters (1/8th – ¼ and 3/16ths).
- 4 Inputs – 12v, Ground, 5v, and Frequency, for additional pressure sensors, or activation triggers for nitrous activation, or a trans brake.
- 4 Outputs – Ground, PWM - , for accessories such as fans, boost control, nitrous control, IAC Kit, and more.
- Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties.
- Nitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR.
- Advanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table, can be used for any custom tables you can dream up, such as a Flex Fuel Sensor Offset Table, or a custom fuel or oil pressure safety!
- On-Board Diagnostic LEDs for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal –Cam Signal. Allow you to identify any critical engine issues at a glance.
- The included 3.5" Touchscreen Handheld contains a calibration wizard, allowing you to quickly build a base tune for any LS engine. Additionally, the handheld provides internal data-logging and a fully customizable gauge display.
- The compact ECU size allows you to mount it virtually anywhere. Remember, diagnostic LEDs must face up!
- Plug and play compatible with more Holley EFI accessories such as analog-style gauges, shift lights, various modules, and coming soon, 12.3" digital dash support!
- Free EFI Tuning Software for complete control of your Terminator X power plant.
- Includes: 24x 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 Oxygen Sensor - Input/Output Harness - and assorted vacuum adapters.
- Local Pickup Available:
- Local Delivery Available:
- Additional Handling: