91 Octane - DS T1000

[Mints]

Hey Guys, so I just got my 91 octane tune in my '11 1500 and Im new to the DS world but not knew to tuning...I just wanted to see what I should pay attention to for knock. In my old turbo cars I would see a bit of knock under WOT but since this is new to me I just want some opinions.

Has anyone tried running the 91 tune while running 87 octane gas?
Has anyone ran 93 octane while filled with 91?

Unfortunately here in AZ we only have 91 which kinda blows but I may pick up a bottle of octane booster to see how it goes.

Thanks peeps!

 

[MADDOG]

As a general rule it is not recommended to use a fuel with an octane value lower than the tune parameters. In other words, don't use 87 octane with a 91 tune. You'll definitely have some knock retard problems at WOT.

93 octane with a 91 octane tune will work just fine. I run a 91 octane tune with 92 octane fuel all the time in the SRT and have no problems at all.