Replace factory Intel wifi module with a MacOS compatible one. Make sure that the card is of M.2 form factor. I replaced it with a Broadcom BCM94352Z. [Broadcom Wifi/Bluetooth Guide](https://www.tonymacx86.com/threads/broadcom-wifi-bluetooth-guide.242423/#post-1664577).
### M.2 Hard Drive Replacements:
Replace factory Samsung PM981 with preferably a SATA M.2 SSD, as it is more power efficient and plays nicer with APFS than an NVMe M.2 SSD. [Reference](https://www.tonymacx86.com/threads/solved-lenovo-x1-carbon-6th-gen-battery-life.254508/#post-1768978).