Haltech Nexus T1 ECU & Toyota 4Runner 3RZ-FE | Toyota Tacoma 2RZ-FE & more 1995-1996 Plug 'n' Play Adapter Harness Kit (HT-650907)

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
• Paired with the Haltech Nexus T1 ECU (HT-210000)
• 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.

Why the Nexus T1

The Nexus T1 is Haltech's entry level standalone ECU, successor to the Elite 550, bringing modern Nexus platform technology to budget minded builds:

• 4 x fuel injection and 4 x ignition outputs
• Internal 4 Bar MAP sensor, ready for boost
• Closed loop O2 control with long term learning (with optional CAN wideband controller)
• 4D closed loop boost control and flex fuel support
• Variable cam control for up to 2 camshafts
• Launch control, traction control, anti-lag and flat shift
• 32MB onboard logging plus a 4-channel onboard oscilloscope
• CAN connectivity for Haltech dashes, keypads and expansion devices
• WiFi and USB-C communication in an IP-66 waterproof case
• Fully enabled from the box with no extra feature unlock charges

Kit Includes

• 1x Boomslang PNP wiring harness (BF29168-750) for 1995-1996 Toyota 4Runner 3RZ-FE
• Haltech Nexus T1 ECU (HT-210000)
• Air Temp Sensor - Small Thread Thread: M14 x 1.5

Fitment

1995-1996 Toyota 4Runner 3RZ-FE / 1995-1996 Toyota Tacoma 2RZ-FE / 1995-1996 Toyota Tacoma 3RZ-FE, Manual Transmission.

Important Notes

Manual transmission vehicles only. The Nexus T1 does not support drive-by-wire throttle control. Emissions notice: Haltech products are designed and sold for sanctioned off-road and competition non-emissions controlled vehicles only. It is the responsibility of the installer and user to ensure compliance with all applicable local and federal laws.

Why Buy From Tuned By Shawn

Tuned By Shawn is a Platinum Haltech dealer specializing in ECU engine management, plug and play wiring solutions and remote tuning. Not sure this kit is right for your build? Email service@tunedbyshawn.com before you order, Shawn answers these himself. Want it dialed in after install? Ask about live remote tuning sessions and we will take your build from base map to dyno-proven.