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Holley Terminator X Max ECU Kit (Part #550-928) Advanced Engine and Transmission Control for LS Engines Designed for GM LS 4.8/5.3/6.0 LS Truck Engines and LS2/LS3 with 58x Crank, 4x Cam and 4L60E/4L80E transmissions, Drive-by wire throttle body control, and EV6 Injectors Works with most stock LS fuel injectors and Holley EFI Injectors (will not control Low Impedance Injectors) On-Board 1bar 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 things such as additional pressure sensors, 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 Recommended throttle pedal - 10379038 Includes: 58x/4x LS Engine Main Harness - EV6 Injector Harness - DBW Throttle Body Harness - 4L60E/4L80E Transmission Control Harness - Terminator X MAX ECU - ECU Main Power Harness - Bosch LSU 4.9 Wideband Oxygen Sensor - I/O Harness, Tuning Software
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🇺🇸 Ship from USA · On Agora since 2026
$2,200.00