AI

I would appreciate any help with subject. I want to improve AI in this mod but i don't know how to. I mean i cant find files to this map. I  have already upgraded some single player missions, but  never tried to change arcade map. I love playing this map but with my low connection i can't play  with players so i go offline and use bots. 
How can i change something in their AI? Where are file to  their AI?