STaSIS Engineering Audi S5 Cat-Back Exhaust

There isn’t much one could do that would improve on the vast awesome-ness that is the Audi S5.  However sometimes less is more.  This STaSIS exhaust looks clean and subtle but will give a 10-15hp increase over stock and has a lifetime guarantee.  I wonder if that covers drilling holes into the pipes and trying to construct some sort of instrument out of it…?