Is it a program, running the maths? or simply a compiled look up table based on previously recorded data?
I remember the early days of this, and how that "LSA finder" went through various permutations
(and inaccuracies) until it landed on being in the ball park for virtually SB only.
Considering it's based on piles of cam testing data for a SB Chev, you can understand why it's only somewhat applicable to such an engine, or a close variation..