I finally got a chance to talk to the guy who tuned the car, and apparentley the lady I talked to before had me mistaken for another customer.
He mentioned that the fuel pump was at max duty cycle at 2500 RPM's when I brought it in, which maybe makes sense because of the extra air flow.
After tuning he said the fuel pump reached max duty cycle at 4000 RPM's, and that it started losing power at around 5400 RPM's.
DLF tipped me off to look into a Focus fuel pump which has a few more LPH.
I called airtex and talked to the tech support, and he assured me that my fuel pump was not the problem based on the old thumbrule that for each LPH of capacity of a fuel pump can support twice that in horsepower - which would be 550ish.
The fuel pump I have can support 550 hp, as far as he is concerned, and as far as the dyno tech is concerned, the pump is at max duty cycle at 4000 RPM's.
Hmm, I'll get it figured out.