Samurai Speed already found the limits of its transmission, blowing that when they attempted a modified-engine, launch control-on, drag start. Now it appears they've found the limits of the engine: 600 HP at the wheels plus an extra 150 HP worth of Nitrous.
Additional exclusions unearthed in the customer disclosure form for the 2010 Nissan GT-R indicate the warranty is voided should you go insane and dyno test it or deny Nissan access to your black box data.
According to the drag strip addicts at Dragtimes, the Samurai Speed Nissan GT-R clicks off quarter-mile times around 10.5 seconds at 128 MPH. Unfortunately, this run ended with a grenaded transmission.