Elite 1000/1500 Nissan Silvia S13 (CA18DET) Plug ‘n’ Play Adaptor Harness

CA18DET Modernization: Elite Adaptor for S13

The CA18DET is the original heart of the S13 chassis, a high-revving iron-block engine that responds incredibly well to modern tuning. The Elite 1000/1500 Plug ‘n’ Play Adaptor Harness is designed specifically for the CA18DET-equipped Nissan Silvia S13. This adaptor allows for the complete replacement of the antiquated factory ECU with a Haltech Elite unit, providing the processing power needed to run modern injectors, coil-on-plug conversions, and precision boost control strategies. It bridges the gap between 1980s wiring and modern motorsport electronics.

Engineering for the CA18DET

The CA18DET utilizes a specific connector profile different from the later SR20 models. This adaptor harness is molded to fit the CA18DET chassis loom perfectly. It correctly routes the ignition signals to the factory power transistor (igniter) and coil packs, ensuring reliable spark energy. The harness also integrates with the factory idle air control valve (AAC/FICD) to maintain stable idle under varying loads. By including an intake air temperature sensor, the harness facilitates the removal of the restrictive flap-door or hot-wire AFM, allowing for a MAP-based tune that improves throttle response and flow.

Operational Benefits

Installation requires no modification to the vehicle’s permanent wiring. The adaptor plugs in between the factory harness and the Elite ECU. This upgrade grants access to data logging, engine protection features, and the ability to tune for ethanol blends (Flex Fuel). It is the ideal solution for keeping a CA18DET relevant and competitive on the street or track.

Fitment Guide

• Nissan Silvia S13: CA18DET Engines

Technical Specifications

Summary & Includes

Includes:

• 1 x Injection Molded Plug ‘n’ Play Adaptor Harness
• 1 x M14 x 1.5 Air Temp Sensor with matching plug and pins
• 1 x Auxiliary I/O 16 Pin Tyco plug and pins

Note: Manual transmission only.