Fwiw people on this thread are saying that the DSS carbon fiber driveshaft didn't cause any additional NVH
https://www.ft86club.com/forums/show...t=39701&page=3. But as NoHaveMSG said, he didn't notice any performance increase from going to an aluminum driveshaft which is lighter than the 2nd gen driveshaft. There are more cost effective ways to cut weight provided that you havent exhausted your other options.