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Highest I have seen is 39 psi, this is off the attitude monitor and I can hit it stock no problem, even in 3 it doesnt go over 39 psi although I have never really gotten on it on 3. After the discussion in the last thread I wonder if the previous owner put a boost fooler on my truck?? Where do you install one so I can check?
your edge is probably set at about 35~36 psi... once boost gets beyond the setting, the wastegate is opened to bring it back down. you can change the setting on the attitude for max boost...
I can nail 35# easy stock. I also have the boost limit on my TST on. . .thats set to 35#. I had it off ONCE, and only one time. . .just from the sound the turbo made I would have to say I was in the 45-50+ range.
my gage only goes to 35#, and the needle was WAY past that.