ALL EFI Kit orders have a 3-4 week lead time, and require a completed EFI Order form emailed to us before we can begin processing the order! Click HERE to begin. 5VZ Complete Swap Harness Kit with Haltech ECUs For engines without Drive-By-Wire assist. Manual Transmission Only! This swap harness is NOT suitable for 1995-2004 Tacoma’s and 1996-2002 4Runner’s . The complete swap harness kit is ideal for 5VZ swaps into older pickup trucks, Celica’s, Corollas, and similar vehicles. This system is fully capable of managing everything from stock or mild builds—eliminating the factory Mass Air-Flow meter and addressing poor wiring—to full race Stage 5 builds, including boosted applications (turbo or supercharged), suitable for street, off-road, and full race setups. It can handle it all. Approximate install time: 8 hours. Note: SNP Speed Innovations has designed this kit for off-road use and it may not be emission compliant. Upgrade Your Performance If your 6-cylinder 5VZ swapped project needs a boost, consider adding a power adder like a turbo, supercharger, or nitrous kit, or perhaps upgrading to larger cams. The question then arises: What engine management system can handle this level of performance? We at SNP Speed Innovations have selected the state-of-the-art Haltech Nexus series Programmable Engine Management Systems . Haltech has been a leader in the industry since 1986, winning multiple championships across various motorsports globally over their 35+ years of experience. The complete harness kit can be installed in about a day and comes with a startup base map; further tuning will be required. For our 5VZ kits, we recommend the Haltech Nexus T2 or the Haltech Nexus S3 for their advanced features. Haltech Nexus T2 Features: 6 injector and 6 ignition outputs Internal 4 Bar MAP sensor capable of handling up to 43 psi of boost Removal of the factory air flow meter Onboard data logging (32MB) plus laptop logging 4D closed-loop boost control with learning Launch control and traction control Flat shift and anti-lag support Short-term and long-term fuel trims Full 3D fuel and ignition mapping Complete tunability for naturally aspirated, turbocharged, supercharged, and nitrous applications Compatibility with individual throttle bodies Flex fuel sensor capability for E85 Variable cam control for up to 2 camshafts Built-in WiFi and USB-C connectivity Engine safety protection methods Water and environment proofing (IP-66) Haltech Nexus S3 Features: Integrated display with a high-resolution color screen for real-time monitoring Advanced data logging capabilities with extensive memory for detailed analysis Built-in GPS for track mapping and performance analysis Flexible input/output options for a wide range of sensors and actuators Comprehensive control strategies for boost, fuel, ignition, and nitrous User-friendly interface with customizable dashboards and layouts Multi-channel CAN bus support for seamless integration with other devices Robust engine safety features including over-rev protection, knock control, and more Water and dustproof housing for durability in harsh environments Fully tunable for various setups , including naturally aspirated, turbocharged, supercharged, and nitrous applications Kit Includes: Haltech Nexus T2 or Nexus S3 ECU with USB programming cable Wideband O2 Sensor for closed-loop correction and internal data logging Complete new engine harness made in the U.S.A., featuring all new connectors that plug into your factory sensors Startup Base Map Output Capabilities: Up to 6 injectors and 6 ignition outputs Suited for popular late-model performance and racing applications Recommended for 6-cylinder EFI conversions and engines with single variable camshaft Upgrade Options: Upgradable to the Haltech Nexus S3 This complete harness kit is designed to maximize the potential of your 5VZ swap, ensuring reliability and performance across various applications.

Order Form & Installation Instructions

All EFI kit orders require a completed EFI Order Form before we can begin processing. Download it, fill it out, save it, and email it to tunedbygabe@gmail.com.

Download EFI Order Form

Installation Instructions — Nexus T2

Installation Instructions — Nexus S3

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5VZ Adapter Harness kit with Haltech ECU

5VZ Complete Swap Harness kit with Haltech ECU (Manual Transmission Only)