Inside Line took a 2012 Nissan GT-R to the dyno at GMG racing, and it made 430 whp, and 397 lb-ft of torque. Even though the specs for the 2012 Nissan GT-R say it runs 13 psi, and the specs for the 2009-2011 Nissan GT-R say it made 10.8 psi peak, on the dyno the 2012 actually made a little less boost (just under 11 psi) than the 2009(about 12 psi).
Inside Line speculates that the 91 octane fuel may be the root of it. If they can clock 0-60 times in 2.9 seconds, and 1/4 mile times in 11.1@124 mph and only make about 12 psi of boost, we will see some 10 second stock cars in 93 octane land out there.
Source: Inside Line