ive been doin a lot of math
matchin a turbo map with my calculate mass flow and pressure ratio
and it doesnt match up very well with a t04 60 turbo that ive seen in use a lot
lately

im just wondering if anyone else has done this
and what they got for figures
my pressure ratio is 2.12
and my mass flow is around 25 lbs/min at 7000rpms

and one last thing im not sure about is the volumetric efficiency is just assume it was around 85-90