If you're only building 7psi after a fresh flash, you need to check what tune slot you're on for the Cobb OTS maps. Slot 1 is the performance tune, Slot 2 is the economy tune which limits you to gate pressure (7psi). Pull on the cruise cancel/resume button and use the arrows on the steering wheel to select slot 1 as indicated by the shift light. Plant the giggle pedal and see where your boost is.
If your car is not equipped with cruise...please contact Cobb for support.