Haltech Elite 550 Standalone ECU – Universal | With Plug & Pin Set

Take full control of your engine management with the Haltech Elite 550 — Haltech's entry-level standalone ECU designed for custom engine management builds on up to 4-cylinder naturally aspirated and forced induction engines. The Elite 550 delivers sequential fuel and ignition control, built-in wideband lambda input, traction control, launch control, and full configurability via Haltech's Elite Software Platform (ESP) — all in a compact, universal package. Includes the plug and pin set required for custom wiring harness construction.

Key Features

• Up to 4-Cylinder Support: Supports up to 4-cylinder naturally aspirated and forced induction engines — sequential fuel injection and ignition control for precise engine management
• Sequential Fuel & Ignition: Full sequential fuel injection and ignition control for accurate fuelling and timing across the entire RPM range
• Built-In Wideband Lambda Input: Integrated wideband O2 input for accurate closed-loop fuelling and real-time AFR monitoring — no external wideband controller required for basic wideband functionality
• Traction Control & Launch Control: Built-in traction control and launch control for performance and motorsport applications
• Haltech ESP Software: Configured and tuned using Haltech's Elite Software Platform (ESP) — powerful, intuitive, and widely supported by professional tuners worldwide
• Plug & Pin Set Included: Includes the ECU connector plug and pin set required for custom wiring harness construction — everything needed to begin building a custom harness
• Universal Fitment: Suitable for any custom engine management build on a compatible 4-cylinder engine platform

Specifications

• Type: Standalone ECU
• Series: Elite 550
• Max Cylinders: 4
• Fuel Control: Sequential
• Ignition Control: Sequential
• Wideband Input: Built-In
• Includes: ECU, Plug & Pin Set
• Software: Haltech ESP (Elite Software Platform)
• Fitment: Universal
• Part Number: HT-150401

Note: Custom wiring harness construction is required for installation — professional wiring by an experienced engine management specialist is strongly recommended. Professional dyno tuning by a qualified Haltech tuner is required to safely configure and tune this ECU. Not a plug-and-play unit — intended for custom engine management builds.