I daily mine too. And it only gets 14-15 as well. I don't understand why you would go through the trouble to build a stroker to run stock garbage JTEC. Seems like a giant waste of time and money.
How do you figure, the 5.2 would of never got me into the 13s. So I still have a lot more power than the stock 5.2 even with the stock PCM. When I ditch the lift and the big tires, I should be close to if not in the high 12s.
The original plan was to use MS-II to control just the fuel and spark and still use the stock PCM to control the gauges, 4th gear and torque converter lock up. But since I'm using it as my DD, I can't do all of that yet.