i have just one question, i just recently changed my fuel from 91 octane to 94/93 octane

now, i told z-tune(which is getting me the osiris tune) that i want the tune for 93 octane

is it bad to get a 93 octane tune seeing as how i just recently started using 94/93, or should i stick with 91 octane?

i started using it about a month and half ago

my car is the 06 5at coupe, i have about 54000K on it

 

If you plan on running 93/94 octane all the time, then it is fine to run a tune designed for it. If you run a 91 octane tune it will do fine, but you could be missing out on a few more HP, thats all.

 

^ thanks, ya im always running on 93/94 now