If you are using a factory harness and are after an easy ECU upgrade, take a look at Haltech Plug 'n' Play Adapter Kits. These adapters plug directly into your Haltech ECU and have a set of factory connectors on the other side which plug straight into the factory harness.

• A simple Haltech Plug 'n' Play product that allows you to be up and running in just a few hours.
• The quick start guide will walk you through installation of the Haltech Plug 'n' Play adapter into your vehicle.
• This harness when installed in conjunction with a Haltech Nexus S3 ECU opens the door to virtually limitless performance modification and tuning of your vehicle.
• Fully programmable systems allow you to extract all the performance from your engine by delivering precisely the required amount of fuel and ignition timing that your engine requires for maximum output under all operating conditions.

Suits: Plug 'n' Play replacement of the factory ECU for Toyota Supra JZA80 2JZ non VVTi with manual transmission only.

Includes: Overmoulded molded plug 'n' play adaptor harness, M14 x 1.5 air temp sensor with matching plug and pins, auxiliary I/O 12 Pin DTM12-12P and pins.

Notes: Manual transmission only.