Throttle response?!?!

[RobbyMartin]

I was wondering if any of you guys have experienced a lack of throttle response similar to what turbo lag would be? When I mash the gas the truck hesitates like it has swallowed too much air and then seems to catch up with itself.
I've cleaned the MAF and air cleaner, I've replaced the DPFE, EGR, Plugs, IAC and it runs better but still hesitates. I have a Hypertech Power Programmer III installed and I'm afraid thats the issue but I don't know for sure. I DO plan to purchase the Gryphon but in the meantime I'm trying to solve this issue. Any suggestions?

2002 F150 Supercrew 4.6L (Airaid intake and 3" T-Flow exhaust and Hypertech PPIII)