normally when Uprev doesn't have the ROM in their file system, a Pro Tuner will have to dump the ECU Rom and send it to Uprev then they can do their magic, shortly after 1-2 weeks or faster (email) they will send you back that new Uprev ROM files....
I wonder if your dealership gave you the right number of what Uprev want/need and it might not be actually what is it...
since you have a fairly new 370z, its probably why Uprev doesn't have that Rom in their library, totally normal.
as far as not coming programed from the factory ? is your car running ? if yes then its programed, unless its brand new spare ECU you want then maybe , I don't know.
but if its new then they should program it if need be anyway!
sometimes the dealership are clueless when you ask a very specify question like this....
is there is Pro Tuner in Guam ?
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