![Image](https://mye28.z13.web.core.windows.net/external/c5ed5b1700e7676249e24ed7c965a192.gif)
The way I'm reading it, this turbine can flow a maximum of ~21 pounds of air a minute, and it reaches that at a pressure ratio of 2.5. I suppose the rest goes through the wastegate.
I'm entertaining the thought of a GT3582R with either a .86 or 1.06 turbine housing:
![Image](http://store.forcedperformance.net/merchant2/graphics/00000001/graphs_full/714568-1turb.jpg)
Garrett recommends the 3582 for applications making 400-600 HP. Oddly enough, the .63 AR housing only flows two or three pounds/min more than my .86 AR 2871. It seems like that would be a major mismatch. If you're forcing 50 lbs/min in and the turbine maxes out at 23 lbs/min, there would be more exhaust flowing through the wastegate than the turbine itself, right?
Looking at the flow maps for the 3582, it makes the 2871 .86 seem relatively free flowing on the turbine side for a compressor that peaks around 45lbs/min.