If he has the switchable tune and it was turned off, I doubt he'd see boost pressures that high even at altitude......
Agreed, he would never see the 23psi reported if the tune was disabled. I also have the budget tune and been very satisfied with it. I went from 18psi to 24psi and got the kick in the pants I expected. I chose to control my tune via cruise control on/off but I know other buttons can be assigned.
Was it made clear if the tune was applied to an auto or a stick? I have a stick and my understanding is that the performance gain is a little better in a stick.
I have to say that the lack of understanding in what it would take to apply the tune is a little alarming, which demonstrates a lack of research before purchasing/performing the tune.
It used to be that you had to rent or buy the USB cable that is used to connect the OBDII port to a portable/luggable computer, but now I think the cable is included which in itself is a $150 saving. I found it very easy to install the supplied software and to perform the update to my Redline.
The very fact that dbs1 does not own a computer (which is his right and kudos for not owning one in this day and age) should have paused him for thought before investing in this tune, or at least finding someone who is confident enough to install the software and hook up a USB cable without fear that the computer will experience a meltdown. This installation is no more complex than installing a printer driver in my opinion.
My cost was $200 for the tune and for that price I had to accept the responsibility for getting the tune installed myself, regardless of outcome, and most people have reported great success with installing and using this tune.