Just out of curiosity - how did you do your test run? I thought I was underboosting because no one ever told me (even cobb after showing them my datalogs) how to log a proper run. Once I put the car in third and floored it at 2K, I saw a proper boost build, peak, and trail off through the RPM range until redline.
In your log I see you didnt step on it till 3200K (i think since its cut off). And we dont know what gear you are in.
After I did it the way I described above I saw I was actually over-boosting a bit at 17.23psi.