Download Haltechs Quickstart Guide Here Download Haltechs Wiring Diagram Here Download Haltechs Spec Sheet Here The Haltech HT-150400 Elite 550 ECU delivers advanced, user-friendly engine management in a compact package—perfect for street, track, and motorsport applications. Designed for 4-cylinder or 2-rotor engines, the Elite 550 offers precise control over fuel, ignition, boost, and more, giving you the flexibility to extract maximum performance from your build. Featuring Haltech’s intuitive NSP tuning software, the Elite 550 makes setup and calibration straightforward, whether you’re an experienced tuner or upgrading from a factory ECU. With built-in wideband controller compatibility, multiple inputs and outputs, and advanced functions like boost control, launch control, and knock protection, the Elite 550 provides the performance edge you need. Key Features• Genuine Haltech standalone ECU for 4-cylinder or 2-rotor engines• Advanced fuel, ignition, and boost control• Compatible with Haltech NSP software for easy tuning• Multiple analog and digital inputs/outputs• Built-in support for wideband O2 sensors (optional kit required)• Advanced functions including launch control, knock control, and boost mapping• Compact, durable design for street, track, and race builds Technical Specifications• Part Number: HT-150400• SKU: HT-150400• Engine Support: 4-cylinder and 2-rotor engines• ECU Type: Standalone engine management system• Installation: Professional installation and tuning recommended
