How much is too much??

[Kmc4300]

Not sure what changed for the better pressure but I like it better than it was before. If I remember right I wanna say I read something, maybe even on here, about shimming oil pump with 2 dimes or something like that. Maybe that’s the difference, not really sure. I just mainly wanted to make sure that when it showed over 45 psi during that cold snap the other day that it wouldn’t cause any damage.