Nissan Cefiro Misfiring, AGAIN

Was going to go out to tapau for lunch, driving casually below 3k RPM so didn't really notice. After awhile suddenly the road's empty. My right foot became heavier (if you know what I mean).

So I pushed it for a little, suddenly I can hear my engine sound "blublublublublu" upwards above 3.5k rpm. I thought it was pinging at first (Premature combustion). Then I recalled that I had this problem with the misfiring back then, the coilpacks were burnt (2 of them) and spark plug was way too wet, either this 2.

But that time it was way more obvious, this time it feels like only one not working, or still working 80%. As the misfire is gap is very narrow, can hardly feel the difference but once you get to know your car well, you know something's not right.

I guess I have to go back and change one of the coilpacks again...parts are not expensive, problem is the distance. As this is a 2.5L engine, the fuel consumption is very terrible, costs me about RM15 to go and return.

Oh I'm using RON95 by the way, engine detuned haha.