That was in the fall...thats about 17psi but with throttle closures after 3k....15psi with the throttle wide open was not far behind at about 15 less hp and 30 less tq
I plan on renting the same dyno again in spring and expect slightly better numbers with 17psi and throttle open
That graph is with +2 degrees spark above 12 psi and above 2500 rpm only