Well, here's the thing I picked up from reading a nissan forum. Someone is saying that nissan has integrated a speed limiter (111 mph) based on a gps system...and the only way to disable the limiter is to go to a nissan approved track, which the gps will recognize. He went on to say that after going to the track, you are then required to get you gtr into a nissan approved shop for a complete inspection....that costs ~$1000.
Again, I'm not sure how much of this is true, but if it is....it would be a real pita.
07 335i sedan | Steptronic | Black saphire | Terra | ZPP | ZSP | Cold Weather | CA | PDC | Nav | OEM Alarm