great, on your car in your conditions that time when you ran it that meant it only needed 13psi to hit the same desired load
in any case, i don't disagree with you, I'm just saying you're looking at it from a boost targeting logic and I can tell you right now in really hot/humid conditions it won't be a 13psi tune
I have a feeling though now we'll move away from the timing discussion and go into a load vs. boost targeting approach to tuning and which is better LOL let's not...been there, done that many times...