Haltech Nexus S3 ECU + Universal Wire-in Harness 2.5m (8') - HT-213200

A complete Nexus S3 starting point: the ECU plus a 2.5 m (8 ft) universal wire-in engine harness.

The Haltech Nexus S3 is the successor to the popular Elite 2500, bringing that ECU's proven feature set onto Haltech's faster Nexus platform. It suits engines up to 8 cylinders or 4 rotors and is built for performance and race applications that need advanced race features and data logging.

About the universal wire-in harness

Suited to modified street cars, engine swaps and custom wiring jobs. One end carries the ECU connectors and the other is left unterminated, so you can run each circuit to suit your engine. All wires are colour coded and labelled to match Haltech's wiring diagram, so the build is straightforward. The wiring diagram comes with the quick start guide, and the software is a free download from Haltech.

Hardware highlights

• 8 peak and hold injector outputs and 8 ignition outputs (both usable as low-side drives)
• 4 x 8 A half-bridge outputs for drive-by-wire throttle and other H-bridge loads
• 6 PWM-capable low-side outputs and an engine control relay output
• 11 x 0-5 V analog inputs with switchable pull-ups and redundancy for electronic throttle
• 6 synchronised pulsed inputs for cam, speed and frequency sensors
• Differential trigger and home inputs with adjustable thresholds and glitch filtering
• Onboard wideband controller supporting NTK and Bosch LSU 4.9 sensors
• Internal 4 bar MAP sensor
• 2 CAN buses with switchable termination
• 128 MB onboard logging: up to 300 channels at up to 1 kHz
• Onboard Wi-Fi and USB-C connection, compatible with the Haltech Connect app

Tuning and race features

• Long-term fuel learning (up to 4D) and closed-loop O2 control
• 4D closed-loop boost control and closed-loop CO2 boost control
• Launch control, traction control and advanced torque management (driveshaft and engine RPM targeting)
• Anti-lag, rolling anti-lag and rotational idle
• Dual knock control and multi-level engine protection
• Flat shift, transbrake control and race timer
• Up to 6-stage nitrous control
• Variable cam control for up to 4 cams
• Flex fuel, multi-stage injection, intake air bleed and stepper motor idle control
• Shock travel and ride height logging
• Automatic transmission control for Ford AODE/4R70W, GM 4L60E and 4L80E, Toyota A340E, Lenco and Liberty
• Set up with Haltech's Nexus Software Programmer (NSP)

Key specifications

What's in the box

• Nexus S3 ECU
• 4 x mounting bolts
• USB-C cable and USB-C dust cap
• Quick start guide
• Wiring diagram
• Nexus S3 / S2 universal wire-in engine harness, 2.5 m (8 ft)