Did any of you horsepower calculator guys ever use this

Did you run that 589 combo thru the calculator at the beginning of this thread?

I plugged the data in for my friends street/strip 572....... it’s showing 100hp low.

I did but we don't know the actual head cfm for sure so used [email protected]" for those 365CNC's which may be a bit generous even with a 440-2, and used 8.35 for dynamic both of which may not be accurate, came out at 659hp, not a million miles off of 694 but still low if I'm anywhere near correct