If by risk you mean voiding the warranty.
Up to you.
As far as danger to the power train... A tune alone from a reputable supplier isn't very risky.
But there are no guarantees in life.
I waited a year and a half. Had it for 6 months.
No issues and it transformed the car. V8. I can't speak for how much performance gains you'll see on the 6 I'm sure many others here will chime in on that.
2011 Black Mustang GT Premium
Corsa XO & Sport AB/Airaid/Bama 93R
Best 1/4 mile to date 60' 2.009
12.538 ET @112.33
100+ Deg 85 Hum RPR 3PM 1/2 tank street tires