you will notice a difference with the 93 tune, I promise you.
Like i mentioned before, I have the v8, so the characteristics are different, but i prefer the perf tune, the v8 has plenty of low end torque on it's own, so the perf really kicks things up in the higher rpm range. the torque tune has monster torque but fizzles as the rpms increase.
try them both, see which you prefer. Depends on your driving style. if you tow, the torque tune will be beneficial. or maybe you have a lot of hilly terrain. if you like to stand on it, the perf tune will prob be beneficial.
don't be discouraged, just empty the tank and get some 93 in there, you will feel it.
Sorry for the confusion on the settings, but the other poster cleared that up.
i scrolled through the options but never changed any, i figure leave it to the pros, they know what they are doing.