The Complete Nexus Solution: S3 ECU & Harness Kit for JZ
This comprehensive kit combines the cutting-edge Haltech Nexus S3 VCU with a bespoke Plug ‘n’ Play Adapter Harness for the Toyota Chaser JZX100 and Soarer JZZ30. Designed for the serious enthusiast, this package provides everything needed to replace the factory ECU with the world’s most advanced engine management system. The Nexus S3 offers un-paralleled processing speed, integrated data logging, and wi-fi connectivity, all pre-configured to interface with the 1JZ-GTE VVT-i engine through the included adaptor harness.
Engineering for the Future
The Nexus S3 is more than an ECU; it is a Vehicle Control Unit. This kit enables users to tap into that power without rewiring the entire car. The harness maps the 1JZ’s critical sensors—cam, crank, coolant, and TPS—directly to the S3. It supports the factory electronic throttle (DBW), enabling features like idle control, cruise control (via aftermarket switches), and rev-matching. The kit includes an intake air temperature sensor to convert the engine to a robust Speed Density tuning method, eliminating the restrictive factory MAF sensor.
Operational Benefits
With the Nexus S3, tuning becomes intuitive via the NSP software. Users can set up advanced engine protection based on fuel pressure or lean conditions, configure boost-by-gear, and utilize the S3’s onboard oscilloscope for advanced diagnostics. The system supports flex-fuel integration for seamless switching between pump gas and E85. While the factory traction control system is bypassed, the S3’s internal traction control offers superior performance for high-power applications.
Fitment Guide
- Toyota Chaser/Mark II/Cresta: JZX100 (1JZ-GTE VVT-i)
- Toyota Soarer: JZZ30 MY96-01 (1JZ-GTE VVT-i)
- Transmission: Manual Only
Technical Specifications
| Parameter | Specification |
|---|---|
| Included VCU | Haltech Nexus S3 |
| Wire Type | Automotive Grade XLPE |
| DBW Support | Yes (Factory ETCS-i) |
| Transmission | Manual Only |
Summary & Includes
Includes:
- 1 x Haltech Nexus S3 VCU
- 1 x Injection Molded Plug ‘n’ Play Adaptor Harness
- 1 x M14 x 1.5 Air Temp Sensor with matching plug and pins
- 1 x Auxiliary I/O 16 Pin Tyco plug and pins
Note: Factory TRC and ETCS systems will be disabled. Dash warning lights for these systems will remain on unless bulbs are removed. Manual transmission only.
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