I would definitely buy a Xcal4 as your next mod. Mine didn't come with a tuner but had a BAMA decal under the hood. Luckily i still had an xtra Xcal 3 at the house. I wouldn't really beat on it till you get it tuned. I'm going to guess in the 380-385 range too.
2014 Mustang GT, A6, Grabber Blue