i feel the same way... in higher gears, i would hear a slight amount of ping.i always used 93 since the day i got it, my car ran like **** with the 87 octane.
Dave you gotta get out more...whats the point of having such a classic American icon and it stay in the garage all the time? JK jealous b/c I have no other ride to drive right nowI have used 87 since day 1. Even after my intake and exhaust I have had no problems, although my car is garage kept and not driven in rain, snow, etc. I have only put 3800 miles on it since January 2007.
93 will come after T/B spacer, X-pipe, and tune.