Here’s something I just thought of......

How does that Mustang dyno determine tq/hp?
Is there a load cell or is it an inertia dyno.

With a load cell...... I guess I don’t really know what they use for a formula to come up with “wheel hp” based on the “wheel tq”.

On an engine dyno with a load cell, you get a reading off the load cell, and apply the math to arrive at the hp figure. Without knowing the rpm for the reading/measurement taken by the load cell...... there’s not really a way to know what the “hp” is.