ok so as far as custom tunes, I was wondering does anyone know the performance difference between the tunes? I want to get an 87 Performance tune and was also considering a 91 Performance. But is the canned 93 Perfomance as good as the 91? If thats the case I will stick with the canned 93 for play time. Also does the 91 Performance have better fuel economy then stock or the 87 tune? That is of course if I keep my foot out of it.
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