arent u suppose to unscrew the screw part then tighten it with the nut so it doesnt fly off lol. i have the greddy type s knock off. it sounds pretty loud, i have it on hard setting tho cuz on soft it makes a nasty whistle sound when i let off the gas.
edit: to fit a fmic with fogs, just get something with bottom endtanks, cut the longest bracket in half (wont have an effect on movement of ur lights) ur intercoooler should have bolt holes on the bottom and top of the fmic, just use brackets to connect from bottom of fmic to bottom of the radiator support. then connect ur piping, thats how i ran mine