Hi all. I have a 2014 GC SRT with 160K miles on it. About 10K ago, I noticed that it was sometimes misfiring when I accelerate from a stop. At least, that is what it feels like. But there are no codes generated. Dealer drove it and said he suspected that it needed plugs. I replaced then with the same model NGKs that were in it. And no change. I replaced the coil packs too, and no change. If I drive it in ECO mode, it is way way worse...I can just feel it...pop...pop...pop...pop...pop. In SPORT mode, it is way better, and sometimes seems to go away completely. The engine sounds good, and I don't hear anything mechanical brewing in it. Anyone have any ideas? If it was really misfiring, wouldn't I see a code being set?