Ok I have read a lot of stuff on this forum and other places and I think I read somewhere that you can add values or parameters in the ecm data list, for example the 427 ecm I'm working with does not have an electric cooling fan control. Can't I add a cooling fan control by editing the 0D xdf???
Ive been trying to find where I thought I read something like that but maybe I confused it with something else.....

Thanks for your time