Originally Posted by SpencerMH
I don't think it's likely you were seeing 14.5 psi stock in the summer, I don't think I've logged 13 with stock tuning during over-boost? I assume something was going on with the way the pressure was being read. I think 12 is closer to the intended over boost? in time ill log what the stock programming targets.
Overboost varies depending on gear, speed, engine speed, etc., but max is 14.5psi and it's been well documented here.