It says when upgrading to a full turboback exhaust which just leads me to believe that you need at least a partial turboback exhaust to run this map. The reason cali has special maps like this is in part due to fuel quality but also because many people need to run factory cat pipes and such. I'm not from cali, but that's just my understanding. Run at your own risk.
It really depends on your ideals and your finnancials. You can take stance a) I want to run a map that I know is safe and will not damage my engine at my mods level or b) I am going to run the most aggressive map I can until either my engine blows up or evidence shows that I shouldnt. I personally would rather stay in the bounds of what I know to work, be reliable, and safe rather than gamble outside the lines testing and pushing my luck until finally something goes wrong.