The xA 1NZ-FE is a light, efficient engine that gets overlooked for standalone ECU builds, and this harness is why you don't have to.
The Scion xA 1NZ-FE is a well-sorted platform with a loyal following, but the factory ECU limits what's accessible for serious modifications. The Tuned By Shawn PNP Wiring Harness Kit for the Haltech Nexus connects directly to your factory harness without any permanent modifications, giving the Haltech Nexus full standalone engine control. No cutting, no splicing, fully reversible.
Advantages
- Throttle response that's crisp and direct, not filtered through conservative factory logic
- Fuel and ignition timing calibrated precisely to your actual setup
- Idle stability that's consistent regardless of temperature
- Engine behavior that reflects your modifications accurately
- A foundation your tuner can properly build from
Features
- Plug-and-play fitment for 2003-2005 Scion xA 1NZ-FE, manual transmission
- Compatible with Haltech Nexus R3, R5, S2, and S3 ECUs
- No cutting or splicing of factory wiring
- OEM-quality connectors, USA-built by Boomslang Fabrication
- Fully reversible, factory harness preserved
- For competition and off-road use
The Details
Built specifically for this vehicle's connector layout with OEM-spec connectors and correct wire gauge throughout. Your factory harness stays completely untouched and the car can return to stock at any time. The Haltech Nexus takes full engine control once installed, giving your tuner a clean vehicle-specific foundation to build a proper map from.
Kit Includes
- 1x Boomslang PNP wiring harness for 2003-2005 Scion xA 1NZ-FE
- Haltech Nexus ECU sold separately
Fitment
2003-2005 Scion xA / 2003-2005 Scion xB / 2003-2005 Toyota Corolla 1ZZ-FE FWD / 2003-2005 Toyota Matrix 1ZZ-FE FWD, Manual Transmission.