Please note.....Those GT owners that have pulleys and 93 Octane tunes will need to run for several days on 91 Octane California gas. :thumbsdow During the track event when the car is being driven hard this may cause detonation. :ack Driven mildly to other events this should pose no problem. The stock GT is set up for 91 Octane gasoline, only modified or tuned cars would be effected.
Chip
Chip