stock T3 compressor wheel is a 50 trim. I'm guessing that you are going to a T04E 46 trim. Yes? Well, at the beginning of the threads, or on top of the page, there is a wonderful writeup about how to read a compressor map. If you do not know how to, I highly recommend learning. If you do, then all you need is a map of different compressors or the exact ones you wish to know about, and get the flow rating at 15 psi boost (2 bar).
Wink