i did a little bit of searching for you, it seems most people are saying 10psi on stock injectors is about the max you want to go on a stock ecu.
www.ka-t.org :: View topic - 370cc injectors
370cc injectors and T25 - SR20 Community Forum - The Dash
Max boost with stock 370cc injectors? : SR20DET Forum (rear-drive)
in the end its your car and your motor so its your choice and if you blow it up by running lean then so be it