you can only tune your motor to what you have fitted, and how that all interacts with each other.
As ET said on another thread these gauges we use are say +- 5 or 10 degrees which is fine
its not a space shuttle. That why I cant see the point of pricey gauges.

Once you have your 4x4 set to 10 psi at 100 Ks what you see is what you get I suppose
each motor is different
The bottom line is to get what you have working as efficient as possible