GOD! Ive been hving this problem for over a year now... Weird thing is that at WOT there's no problem...
Also no codes but a missfire code every now and then when I pushed very hard or spin tires a lot. Other than that, no codes. I replaced filters thinking they were to blame, and the car ran fine but after 2 weeks it came back on. Cleaned the filters a coupe of weeks ago and same history.
Ill guess ill order new plugs and coils in the dealers, and if it doesnt work, I hope they have the equipment to do the carbon clean up here in Mexico.