I went the FPT for the warranty reason only.
I did use the the supplied k&n filter and with with a dry filter
others have used the liver something or other tune and are happy
SWU for the ProCal desktop SW
did get a prompt to update to database 33 after connecting device
device remained at v1.392 after updating to database 33
no apparent change to ProCal device
haven't connected device to truck to see if any apparent changes