67mm vs 72mm vs 74mm turbo spool

[Billman]

The second one has a bigger turbine housing that affects spool a lot.

[Jamo]

You should be making more power than that on the 67mm if it's a Billet, the hotside is big enough and the turbine wheel is big enough. What cams and who mapped it?

[Jamo]

Unless they are wheel values and not crank figures?

[vcosmin]

As i said, in 67mm dyno, there were leaks in intake manifold , so to much backpressure.
No more leaks in 78mm turbo dyno. Only thing missing is to know turbo speed, and it will be much easier to understand it. Next investment turbo speed sensor
This are crank hp.