So many experts
The amount of boost you can run will be limited by detonation or fuel.. and on beiges, assuming you mean 701's, on a 2 litre (even on a small T3) i doubt you'll be runing much more than about 10 pounds of boost before you max the injectors out!
Your tuner should be the person you ask this question to... or more to the point, he'll tell you what its running and thats that!