Different year questions,

[ProphecyPerf]

i have tunes Wrote for a 2012 6.7 PSD, Can i download these tunes on a 2016 6.7 PSD, I understand turbos are different and i will do some Datalogging to dial that in.
main question is trying to save myself time writing all new tune, would this be beneficial? The tune i have is a 100Hp tune how its wrote, it runs awesome on the 2012, so just asking before i load it up and figure out i need to start at scratch,

[projectlnf]

No!

2011-12
2013-16
17-19

Pretty sure I have the year ranges right.

Making a HTT might help you get in the general direction BUT you might be missing some tables that the 16 needs that the 12 does not.