Too bad you didn't put your stock maf on for one of the dyno runs.
I would run stock MAF and injectors and see how it drives. It will run a little rich but you'll get most of your power back, probably more mid-range power. Anyway, at least until your pro-m is figured out.

There is still something else going on above 5.5K rpm. You are choking off and that is probably exhaust. Is you're main cat new?

Former owner of '99 CSVT - Silver #222/2760 356/334 wHP/TQ at 10psi on pump gas! See My Mods '05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red '06 Mazda5 Touring, 5spd,MTX, Black