Standalone ECU support for the 3RZ-FE is rare, and this is your clean path to it.
The Toyota 4Runner 3RZ-FE is a capable platform with a loyal following, but factory engine management puts a ceiling on what's possible. 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 immediate and proportional to input
- Fuel delivery that stays accurate across load and temperature changes
- Engine behavior calibrated to your actual modifications, not Toyota's averaged factory map
- Consistent power delivery that doesn't change with heat soak
- A foundation for builds the factory ECU simply can't support
Features
- Plug-and-play fitment for 1995-1996 Toyota 4Runner 3RZ-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 1995-1996 Toyota 4Runner 3RZ-FE
- Haltech Nexus ECU sold separately
Fitment
1995-1996 Toyota 4Runner 3RZ-FE / 1995-1996 Toyota Tacoma 2RZ-FE / 1995-1996 Toyota Tacoma 3RZ-FE, Manual Transmission.