I know for sure the car was tuned in FL...no idea what kind of octane situation they have down there, but here in NE we only have 91 octane, unless you want race gas.
Looks like it was tuned here (Custom Tune by Jerry at LET):
https://www.crossfireforum.org/forum...or-sports.html
So I'm guessing 93 octane? Should I be concerned about using 91 octane all the time?