How do the Termignoni silencers / ecu / filter affect the performance of the 1100? As I recall, some people said the Termignoni silencers on the sport classics acutally made the bike leaner, although the sound was good. Also, all I've ever seen on a bike are the carbon fiber silencers. I see that Ducati also makes a titanium version, but I'm not sure if they're even imported to the U.S. Anyone have any experience / comments on the titanium as compared to the carbon? Thanks.