The thing is, that's the PSI including the oem boost solenoid which does adjust boost to a certain level.
Another interesting thing I found is this chart. Look at the standard actuator psi!
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Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP)
Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58)
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