I did a leak down test before I had this tune done. I would recommend the same. There was a guy 2 days ago that was doing the same thing as me with the Dom III and Meth but on a 2.0L and his motor was gone. They hooked it up to a smoke machine to check for intake/boost leaks and smoke started pouring out the exhaust.
I would almost discourage the q16 tune. Just because once you feel the extra power, you will want it all of the time and the regular pump tune will feel slower than before.