Break in is 1000 miles. Everyone has their own opinions on this, but during that time I varied my speeds to better set the rings. Also, get to about 70 and let off the throttle completely to about 40 a couple times to get oil over the heads. As soon as I hit 1500 miles or so, I gave it it's first oil change and started running high quality full synthetic oil in there, most conducive to the high temps/pressures the ecoboost creates. Everyone has their opinions, but I run Pennzoil Platinum, which has more anti wear additives better suited for high pressure motors like the EB. I also run nothing but top tier fuels.
You will get more information on the tuner in the modified's section. I have been tempted, but have not proceeded because, frankly, I have been more than happy with the power thus far. Some have also said the EB gets stronger over time. I love this motor.