Editing S130/z31efiupgrade php (section)

=== Purpose ===

The 81-83 Datsun 280ZX Turbo (S130) and 84-89 Nissan 300ZX Turbo (Z31) both use Nissan’s ECCS fuel injection system. The Z31T ECU is virtually plug & play into the 280ZXT EFI harness with a few quick wiring changes. Benefits of this upgrade include: updated fuel and ignition timing control, less airflow restriction, option to use NIStune, PocketROM, JWT, AFC or similar aftermarket programmable ECU controls, ECU diagnostic codes, wiring fixes, and more. This swap alone will only add about 10hp, but it eliminates the troublesome AFM and wiring bugs of the 280ZXT. Running with a boost controller and intercooler, the Z31T ECU will really make big improvements.

'''Note:'''

The Z31T had several EFI changes throughout its production that may affect your installation procedure. Details will be discussed below, but be aware of ECU high/low impedance, O₂ sensor type, and internal circuit boards. Before attempting this swap, read these steps many times to become familiar with the nomenclature. Also print out and study the wiring schematics.

⚠️ WARNING – Do this diagnosis/modification at your own risk. We are not responsible for any issues or damage caused by your own work.