I am assuming i need to update the injector tables for the 2002 GMC Express van tune i am modifying for my truck. I have 27lb Ev6 injectors, which are the same as LS2 injectors, nand am unsure about how to do so without changing operation systems or instal a Custom OS.

Is it just a copy and paste for tables similar between mine and a LS2 corvette?

Im having issues with starting and idling and am hoping to find the results in the injector timing tables. Any help would be great! Thanks