The Visconti Tuning Nissan 400Z Gateway Bypass Harness allows ECU programming on secured gateway-equipped Nissan Z (2025+) vehicles through a secondary OBD2 port without removing the ECU from the vehicle.

Nissan 400Z vehicles equipped with an updated gateway module include additional security that prevents ECU programming over the factory OBD port. The Visconti Tuning 400Z Gateway Bypass Harness allows ECU programming without removing the ECU from the vehicle or performing a bench flash.

How it works:

This plug and play harness bypasses the gateway module, allowing EcuTek RaceROM to be flashed directly using ProECU or ECU Connect via the included secondary OBD2 port. Installation is straightforward and requires no cutting, splicing, or permanent modifications.

What’s included with the kit:

Visconti 400Z Gateway Bypass Harness