I don't know about this.I had my car with a te63,3200 stall,pp heads and 218/218 cam running 7.1 in the 1/8 @100 on 93 and took it to the 1/4 track and was able to run in the 11.2s @121 or so consistently on just 93.Boost was only 16#
Oh and it was summertime here too when I was doing it.Consistently.