Thanks, but I guess I'm confused after reading this thread where even Jake says he's developing a dampened UDP. RSS, it seems, already sells a dampened pulley, and the dual mass flywheel, it seems, dampens the area of the tranny connection, not the engine harmonics, so two separate purposes. Seems there's still a good reason for a dampened pulley. I guess my question is answered however, as RSS puts out a dampened pulley.
986 2.5 underdrive pulley dyno graph