@steilkurve my situation is the same as yours: bought an S in 2013 with dual chargers and at that time installed an HPWC on a 100A circuit and charged at 80A. This year bought an X 100D (traded in the S) and now charge it at 72A from the same HPWC.
I have no plans to replace my HPWC or change anything about my home charging setup. I see no reason to do so since my Roadster has its own HPC charger for 70A charging.
Note to
@2virgule5 : your post seems to say that the "new ones" (do you mean Tesla Wall Connectors?) max out "at 72A" but I do not think that is correct. They can be used on a 100A circuit and can charge older Model S with dual chargers at 80A. See
Model S/X Wall Connector Quote: "For power sharing with more than one Tesla, install with as much power as possible, up to 100 amps." Also see page 4 of this document
https://www.tesla.com/sites/default...l_connector_installation_manual_80A_en_US.pdf
I might have to replace my HPWC charging cable because the button on the cable end that opens the charge port door may be failing: I have to press that button multiple times to get the X charge port door to open. But that is an issue unrelated to your post.