I have finally took delivery of 10 touring,auto,sport,nav. after 6 month . order it on 2nd week of Jan. thanks to the members feedback ,I ordered Stillen CB and had dealer install it. on my drive home noticed rattling from exhaust. went back and dealer stated that he did follow instructions but pipe was hitting the cross member. so he added shims to crossmember. did any one who installed Stillen CB have similar problem? is this the correct remedy? I love the sound of the system, quite but loud . will post pics later after I unglue myself from the seat