Happy Saturday folks, I couldn't find any thread specifically on upgrading spark plugs on a stock 2014 ex Sport so here I am. I plan on replacing them soon(nearing 50k), even though I know it's not recommended yet... But was curious if there are any "upgraded" plugs from stock and if anyone had any recommendations. Also, could I expect any noticable difference with an upgraded/properly gapped plug? The only thing that isn't stock about my Sport is a drop in k&n filter(no difference in performance, other than a little sound) and 265/50/20 tires.