Haltech Elite 2500 + Toyota 2JZ IGN-1A Terminated Harness Kit (HT-151355)

Designed specifically for Toyota 2JZ engines (both VVT-i and non-VVT-i), the Haltech Elite 2500 IGN-1A Terminated Harness Kit provides a comprehensive engine management solution for performance builds and conversions. This kit includes a terminated engine harness tailored for IGN-1A coils, combined with the powerful Elite 2500 ECU offering advanced tuning, race functions, and full integration with the NSP tuning software.

Built for serious tuners, the package supports a wide range of fuel types, boost control strategies, and real-time data logging capabilities.

Note: For competition/off-road use only. IGN-1A coils not included—please order 6 × HT-020114 separately.

Key Features

• Purpose-Built for Toyota 2JZ Engines: Supports both VVT-i and non-VVT-i variants; designed for manual transmission applications only.

• High Output Ignition Support: Includes a dedicated pre-wired ignition harness for IGN-1A coils (coils not included).

• Comprehensive Engine Management:

  • Drive-by-wire support (requires throttle conversion for factory ETCS-i units)

  • Flex fuel tuning and closed-loop O2 control

  • Dual channel knock control and high-speed logging

  • Variable camshaft and idle control

• Race-Ready Functionality:

  • Anti-lag, traction control, rolling launch, and flat shift

  • Up to 6 stages of nitrous control

  • 4D closed-loop boost control with learning

  • Data logging via onboard memory and laptop

• System Expandability: Dual CAN bus communication for Haltech dashes and CAN devices

Vehicle Applications

• Engine Compatibility: Toyota 2JZ-GTE / 2JZ-GE (VVT-i and non-VVT-i)

• Transmission Requirement: Manual transmission only

• Throttle Note: ETCS-i electronic throttle bodies require conversion to mechanical throttle or use of a Throttle Convert Kit

Kit Contents

• Haltech Elite 2500 ECU with DBW and race functionality

• Terminated engine harness with fuse block and firewall grommet

• Pre-wired IGN-1A coil ignition harness

• USB programming cable

Note: IGN-1A coils (HT-020114) are not included and must be purchased separately.