in a heated building.... duh... friggen' cold in WI to be doing dyno's outside in winter!
Please also remember the dynometer is running SAE temperature corrective software, so dyno's in summer and winter will be very close to matching.

Anyway - what I was trying to express was I know from personal experience that a stock motor can handle 15 psi well if it is fueled/tuned correctly.
I am sure there are others who have experienced even more.

The 928 has a great block and super-sized set of main bearings. We really benefit from that.

 

Have you checked the Electromotive website? I bet that everything on that CD can be downloaded from their site, or perhaps by calling or emailing them, they maybe can send you another one.

 

Been a while. Greece/China/Puerto Rico/Ukraine/Illinois keeping me busy these days...

I am posting from work on an iPhone, can't see what engine you've got there. 2 valve or 4 valve, what compression, and does the final config include knock sensors? Also, what fuel? If you can also guess the intake manifold charge temperature at each contemplated boost level, we can start making educated guesses for your hardware config.

My turbo experience has been that with the 9.4 cr s4 engine that is well intetcooled and runs on 93 octant pump gas, you can get the volumetric efficiency in n/a units to slightly under 200% without having to retard the spark so much that the turbine max temperature limit is exceeded. That's a ball park number from memory. So at n/a peak torque rpm 14 psi is close to the limit while at 6500 rpm you can give it over 20 psi without any problems.

Caveat lector as always.