what is injector data exactly?

[runsfromdacops]

so i have fic 1100s in a 04 yukon right now, i know the tune is jacked and the injector data is untruest worthy.
i am trying to start over on a fresh bone stock tune. i keep hearing "the injector data must be spot on to start" but i am unsure of what "data" this is in the tune
i know the injector vs kpa is for injector size vs vac if you dont have a vac refed regulator (which i do) so it is the same value across the board.
there are afew other tables that looked to deal with the injectors. do i need to input more info in any of these?
if so what info do i need to get from FIC?

[odom1957]

You need to contact the company you bought the injectors from to give you the data. It should come formatted for your pcm and HP tuners. All you will do is cut and paste.

[doc350]

FIC as in Fuel Injector Connection or Fuel Injector Clinic?

Fuel Injector Clinic has data on their website. I can't speak to its accuracy as I have never used them.

Fuel Injector Connection will email you a spreadsheet. I have used their 60lb LS3 injectors and they seem to work decent with the data they provide.