I’ve had the code for a while cars running completely fine. Changed spark plugs and coil packs. After changing coil packs code went away for 2 days I have a stillen air intake with a invidia exhaust. Could this be the o2 sensor?

 

Check for vacuum leaks, check voltage (I had a misfire caused by a bad battery that wasn't getting enough voltage to the coils), and check fuel trims on each bank.