Ok, so I know this is gonna sound kinda dumb.
Is there a magic number for max SOI?
Like a rule of thumb, dont exceed XX degrees at XXXX ICP at X.X PW at XXXX RPM.

I realize this has been the mystery for tuners for quite a while, and probably varies greatly for different injector combo's and I'm sure no one wants to say. I have seen a few SOI maps that are extremely different and I am trying to establish some boundaries to play within.
Can you tell from engine noise when you have gone to far or is it not so obvious?
Thank you for being patient with me.