How do you reflash 350z?

To reflash a Nissan 350Z, you will need an ECU tuning device or software that is compatible with the vehicle. Begin by connecting the tuning device to the car's OBD-II port, usually located under the dashboard. Follow the manufacturer's instructions to upload the new firmware or tune to the ECU, ensuring that you back up the existing settings first. After the reflash is complete, disconnect the device and start the engine to verify that the changes have taken effect.