That's incorrect. If you look at the maps both work better at higher pressure ratios than I ran at but was on 93/alky for the mph posted and in the mass flow danger zone for the front of the engine so I didn't turn it up. The engine was run in that configuration for almost two years. With boost in the 30+psi range the t70 would have supported a lot more mass flow no doubt. The 9180 stays really fat between 3 and 4:1. Likely over 90lbs/min on my engine. Also I'd expect the 9180 to spool about 3 times as fast with no other changes. The same engine cranked out 592whp@22psi 65lbs/min with a 60-1 P, 655whp?(can't remember exactly)@24psi with a crappy t-netics cast 66 72-73lbs/min, and 697whp@29psi 78lbs /min with a 6265. I'm pretty sure I got a 72 P to make 680ish with boost in the 26-27psi range also on the same engine. About 77bs/min through an old P trim turbine. If you look at the map for the 60-1 it doesn't even flow enough air on paper to support what it made. I'll take the 9180 to the shaft speed limit.and see what it will do. I'll bet it will outperform all of them and spool faster.