Haltech Nexus S3 Plug'n'Play Adaptor Harness Kit - VW/Audi 1.8T AWP

Haltech Nexus S3 Plug'n'Play Adaptor Harness Kit - VW/Audi 1.8T AWP (HT-213325) is a complete Haltech Nexus S3 plug-and-play ECU package for supported 2001–2006 VW/Audi-group 1.8T AWP factory-ECU applications. It combines the Nexus S3 ECU with a vehicle-specific adaptor harness so supported vehicles can retain the factory engine loom while gaining modern Haltech tuning, logging and control capability.

Throttle compatibility — DBW supported: The supported VW/Audi 1.8T AWP application uses the later full electronic-throttle arrangement, and the Nexus S2/S3 ECU supports dual DBW control.

Vehicle fitment

• VW/Audi-group 1.8T AWP engine only — 2001–2006.
• Volkswagen Golf Mk4 GTI, Bora/Jetta, Beetle and Polo GTI.
• Audi A3, A4 Quattro Sport and TT Mk1 (8N).
• Skoda Octavia vRS.
• SEAT Leon and Toledo.
• Transmission: manual only.

What’s included

• Haltech Nexus S3 ECU.
• Overmoulded vehicle-specific plug-and-play adaptor harness.
• M14 x 1.5 air-temperature sensor with matching plug and pins.
• Auxiliary I/O 6-pin DTM06-6P plug and pins.

Nexus S3 highlights

• 8 peak-and-hold injector drivers and 8 ignition outputs.
• Onboard wideband control supporting NTK and Bosch LSU 4.9 sensors, plus an internal 4 bar MAP sensor.
• Dual CAN networks, onboard Wi-Fi and 128 MB internal data logging.
• Advanced strategies including 4D closed-loop boost control, traction control, launch control, anti-lag, dual knock control and multi-level engine protection.
• Configured and tuned through Haltech NSP (Nexus Software Programmer).

Application notes

• Haltech developed CAN dash support on a 2003 Volkswagen Beetle; other listed vehicles may have reduced dash functionality or no supported dash integration.
• This product remains in universal/system Haltech collections only; no European engine-family routing is added.

Built by Boost & Tune support

Built by Boost & Tune is an authorised Haltech dealer. We can verify fitment, supply and install the kit, integrate sensors and CAN devices, perform first-start checks and dyno-calibrate the ECU for the vehicle’s combination.

Throttle / DBW suitability

DBW supported: The supported VW/Audi 1.8T AWP application uses the later full electronic-throttle arrangement, and the Nexus S2/S3 ECU supports dual DBW control.

Supplier

Haltech

Product System

• Engine Management
• Wiring Sensors Displays

Supplier Part Number

HT-213325

Generic CAN (GCAN) — Current Beta Feature

Haltech identifies this Nexus ECU / display platform as eligible for Generic CAN (GCAN), its user-programmable CAN messaging feature. GCAN is provided at no additional licence cost on eligible Nexus hardware and can also be enabled on existing eligible units through the applicable firmware update.

• Create custom CAN messages for supported third-party devices and systems.
• Useful for OEM dash retention, CAN sensors, steering-wheel / switch controls, ABS data, loggers and other custom CAN integrations.
• Haltech currently specifies support for up to 30 CAN frames and 200 signals.

Important: GCAN is currently released by Haltech as a beta feature. Access requires opting into the applicable beta software / firmware through NSP. Check Haltech's current GCAN release instructions before updating, back up the existing configuration first and verify all connected-device operation after the update.