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[aaronatstate]

According to your picture you just T'd into the stock vacuum line coming off the y-pipe. If so that is your problem, as you are effectively tying the NO and COM ports together.

If you did, try this. I ended up doing it because it made my profec b spec ii behave better.

Take 2 equal length vacuum hoses and run them from the wastegates to a T, and then run a line from the T to the COM port on the solenoid (the T will be somewhere around the water neck). Next run a line from the y-pipe to the NO port (this line has to see pressure only so it needs to be before the throttle body). Remove all other vacuum lines, and cap off the port on the rear turbo inlet pipe. This should make it work properly.

Also the Profec B spec II only reads to negative 9.9psi. Your boost gauges when not in boost reads in inches of mercury (inHg), not psi, you cannot compare the two with out converting.