First off that manifold is garbage... the worst flowing peice ever, not to mention its cast. 6 psi is nothing dude especially with the heat soke from that cast manifold and the huge lag from the front mount. It would be way more efficient to get a sc. And the mystery "black box" that their talking about is retarded. Why would you want to trick your ecu like that... unless you know how to run a fuel management system and a boost comtroller which can be very dangerous in so many aspects if you dont know what you are doing. Save you car and your money and get a sc.
David was over my shoulder to help me word this nicely.
In short I wuold research as much as possible about turbos, how they work, what makes them work better/effiecient, and how you can build your motor to except boost. Good luck with your FI dreams