Even if you didn't posted initially pics with your sky you had something which stopped me to post my favorite smiley:

Maybe because I loved the other cars of yours?

The hunch is real, I knew you will be one of my new favs new commers and you proved it with your latest replies.
Let's start:
1) 6000 ft??? where do you live? Himalaya?
2) who tuned you?
3) Do you remember what boost you were running with stock calibration when you did 233hp? Seems a little bit low 23psi on that altitude, but this shouldn't sound as something bad, but something more towards conservative!
4) Do I read correctly? 19psi at 5000rpm and 16psi after 5500rpm after tune?
Loved your black Sky

oh and I liked your previous reply, dyno before and after, with afr and boost plots seems like you know what you are doing.
Advices:
If you want more, get rid of the cat
