My FI, non resonated exhaust, with Berk HFCs has never popped. Heck my Mustangs droned, my 370Z doesn't even drone.
I posted some videos here.
Fit of every piece was perfect. Even the packing was excellent when I received my FI exhaust. I have nothing but good things to say about. I drive mine daily, through the snow and salt and everything, and it still looks great.