The first thing I did when I bought my '13 was removed those retarded air blocking plastic covers. I gapped my plugs to .028 and never once had a problem, apparently either I'm smarter then a Ford engineer or there stupid with no common sense. When I get a tune that will be better then anything Ford is gonna do so I have no worries.
--2013 SCREW ecoboost
--1994 turbo camaro