Not that familiar with the newer body styles, but are the Bilsteins a larger than stock shock?
Has your ride gone to feeling more "truck-like"? Are you getting a feeling like something is indeed loose, like wheels rattling around when you hit bumps? In other words, your front is not feeling "tight"?
Could be things then like ball joints, or tie rod ends.
Maybe an obvious dumb question, but what kind of pressures are you running in your tires? Also, are the tires in good shape, no balance issues?
Mark