octane question

[scnomadc]

hello all, im from Chile (93 , 95 and 97 RON fuels here), im using the 91 canned tune with 97 octane RON , i want to try the 93 tune but 97 is the maximun octane fuel here. Can i run the 93 tune with the 97 premium ron with out knock? 97 ron its like a 92,15 mon? I have 2011 dodge ram hemi 5.7 Thanks! sorry for my bad english

[Mike_Levy]

Only way to know is to try it and log it. If its anything but a Hemi, it should be fine. If its a Hemi, its going to knock, guaranteed.