I still have some healing to do so I can’t do much on my car yet but I did weight my old and new splitters.
Besides the aero advantage of the new larger and tunneled splitter it only weighs 16lbs compared to the 30.5 lbs that my old AL sheet and square tube home brew splitter checked in at.
Mounting the new splitter will add some weight but I should still save at least 10lbs.