" Went out and did a little more testing.
First, made a video showing the wastegate is getting full vacuum. To those who understand N5X boost control systems this is a critical step. I tested it on dyno as well but did not video it but at this time seems like a good idea to document it as fact.
I then disconnected the diverter valve solenoid electrical connector and did a 3rd gear run. Boost was roughly the same as the dyno. Maybe 1psi higher at peak due to the much colder weather but still tapers heavily up top. Dyno log was done in 65 degree weather. I could hear the turbo surging when letting off the gas so the DV was definitely disabled.
Then I pulled over, reconnected it, and did another run. Boost was roughly the same as with the diverter valve connected. Note on the DV off log I let off as soon as I saw boost taper back down to 15psi. "