Haltech Elite 550 ECU + Plug & Pin Set

Haltech Elite 550 ECU Overview

The Haltech Elite 550 is a simple yet powerful ECU, ideal for 4- to 8-cylinder or 1- to 2-rotor engine applications. It is suitable for both naturally aspirated and forced induction engines, offering complete control over fuel delivery, ignition timing, and boost pressure levels.

Main features:

• Support for engines from 1 to 8 cylinders or 1 to 2 rotors.
• Application for naturally aspirated or forced induction engines.
• Load sensing by:
  • Throttle Position Sensor (TPS),
  • Manifold absolute pressure (MAP)
  • Mass airflow (MAF).
• Injection patterns:
  • Sequential, semi-sequential, batch or multipoint.
• Ignition modes:
  • Multi-coil direct ignition, distributor ignition or Haltech CDI systems.
• Connecting to additional devices:
  • CAN connection for displays, dashes and expansion devices.
• Sealed and waterproof box (IP67), with USB cover included.
• 34-pin AMP connector.
• Entrances and exits:
  • 4 x Fuel injection outlets (peak and hold).
  • 4 x Ignition outputs.
  • 2 x Dedicated inputs for engine position.
  • 1 x Analog voltage input.
  • 3 x Dedicated inputs (Throttle Position, Coolant Temperature and Air Temperature).
• Internal 4 bar MAP sensor (measures up to 300 kPa / 3 bar / 45 psi boost pressure).
• Expansion of up to 33 input/output channels (via CAN).
• USB communication with laptop (Windows compatible).
• NSP calibration software for more intuitive control.

The Haltech Elite 550 is a versatile and robust ECU, perfect for high-performance vehicles requiring precise and reliable engine control, all in a compact and easy-to-use package.

Haltech Elite 550 ECU Features

The Haltech Elite 550 offers an advanced range of features for managing and tuning high-performance engines. The key ECU functions are detailed below:

Main functions:

• O2 Control - Closed Loop with Long-Term Learning:
  Allows for precise tuning of the air-fuel ratio (AFR). The optional external O2 CAN wide-probe controller kit improves tuning accuracy.

• Boost Control:
  Closed-loop learning with user-defined axes, featuring six fully adjustable modes, including boost pressure control per gear, road speed, and more.

• Flex Fuel Function (Direct Sensor Input):
  It allows you to adjust pressure boost, fuel mixture, and even ignition timing based on the ethanol content in the fuel, maximizing engine efficiency based on this parameter.

• Low impedance injector control:
  It offers control over programmable peak and hold currents, improving injector management in high-performance applications.

• Idle Speed Control:
  Closed loop to maintain a constant idle speed, requiring 1 or 2 user-defined outputs (BAC type).

• On-board and laptop data logging:
  Allows you to record all available channels directly to your laptop's hard drive for real-time diagnostics and adjustments.

• CAN Bus Communication:
  Compatible with Haltech displays, expansion devices, or OBDII to display live engine data and manage diagnostic trouble codes.

• 2-stage injection for rotary engines:
  Ideal for rotary engine applications, providing precise injection control.

• Advanced features enabled at no additional charge:
  The ECU comes fully enabled, with no additional payments required for advanced features.

Advanced setting:

• Resolution of the adjustment table:
  Up to 32 x 16, allowing detailed and flexible adjustment.

• Unlimited flexibility in tuning:
  It allows you to tune your engine using a combination of 3D tuning tables, 3D cylinder offsets, and user-defined corrections, eliminating the need for dual mapping.

• Cylinder fit correction (3D):
  Allows you to make specific adjustments per cylinder with 3D resolution.

• O2 Broadband Connection:
  Up to 3 channels can be connected via CAN expansion devices for precise control of the air-fuel mixture.

• Thermocouple / EGT (Exhaust Gas Temperature) Connection:
  Connect up to 12 channels via CAN expansion devices to monitor exhaust gas temperature.

• Variable cam control:
  Independent control of up to 2 camshafts, with a minimum of 1 user-defined input and 1 output for each variable cam.

These advanced features allow the Haltech Elite 550 to offer precise, highly configurable control, ideal for modified engines or high-performance applications.