370Z running on 5 cylinders, rough idle, no power

GEMu

Did search for it but not quite found the answer so I think it would be a better idea to open my own thread.

The motor is currently running on 5 cylinders as the my local racing garage mechanics said, they replaced an ignition coil and 2 O2 sensors, got the rough idle and power loss problems fixed for a night.. then it happen again this morning.
Nissan doesn't stock 370Z parts in my country, all of them were import from grey market so there is no "official" mechanic support from Nissan for 370Z, owners need to sent their car fix at local shop or order parts from japan by themselves.

ps. misfiring too, no any CEL light on dash tho.

Anyone had the same problems before?
Gladly bring u around bangkok if you can troubleshoot what is wrong with my car hahhahaha.

Thank you