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Holiday Special Haltech Nexus S3 Ecu + Plug 'n' Play Adapter Harness Kit - Subaru Wrx My99-00 Holiday Cheer Edition [2zd6lCPD]

$89.99 $287.99 -69%

Haltech Nexus S3 ECU Kit for Subaru WRXThe Haltech Nexus S3 ECU Kit is a game-changer for Subaru WRX enthusiasts seeking a powerful and versatile upgrade. This kit is designed to replace the factory ECU, offering an unparalleled boost in performance

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Haltech Nexus S3 ECU Kit for Subaru WRX

The Haltech Nexus S3 ECU Kit is a game-changer for Subaru WRX enthusiasts seeking a powerful and versatile upgrade. This kit is designed to replace the factory ECU, offering an unparalleled boost in performance and functionality. The Nexus S3 ECU is the successor to the Elite 2500, renowned for its excellence, and incorporates the superior processing power of the Nexus platform. This kit is the perfect choice for those looking to unlock the true potential of their WRX.
  • Superior processing power for enhanced performance
  • Plug 'n' Play Adapter Harness for easy installation

Technical Specifications and Features

The Haltech Nexus S3 ECU Kit is packed with advanced features and technical specifications that set it apart from the competition. This kit includes an 8-channel injector driver, 8 low current ignition outputs, and 6 PWM-capable low side drive outputs. Additionally, it offers a comprehensive suite of features like long-term learning, stepper motor control, and 4D closed-loop boost control. The kit also includes an on-board wideband controller and 4-bar MAP sensor, ensuring precise and reliable tuning.
  • 8 x peak/hold injector drivers (low side drive outputs)
  • 2 x CAN ports with switchable termination
  • On-board wideband controller supporting NTK and LSU4.9

Applications and Benefits

The Haltech Nexus S3 ECU Kit is an ideal choice for both professional tuners and DIY enthusiasts. Its plug 'n' play adapter harness makes installation straightforward, allowing users to be up and running in just a few hours. This kit is suitable for Subaru WRX models from MY99-00, manual transmission only. With features like multi-stage fuel injection, engine protection, and advanced torque management, this kit opens the door to limitless performance modification and tuning possibilities. It's a must-have for anyone looking to extract maximum performance from their WRX.
  • Plug 'n' Play replacement for factory ECU
  • Supports Subaru WRX MY99-00 (Australian Delivered and JDM)
  • On-board Wi-Fi and datalogging for precise tuning

What Our Customers Say

December 31, 2025

Absolutely no complaints!

It's a great item. And it is so, so, so, so useful.

- Urien W..

December 31, 2025

Absolutely no complaints!

Very good. I would most certainly recommend.

- Gwydion W..

December 31, 2025

Absolutely no complaints!

Flawless performance right out of the gate.

- Fabian D..

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