Hello guys, I'm new to this forum and since about six months ago I own a '06 SXT. I've just ordered a DiabloSport Predator tuner, and I was wondering which canned tune to use, 91 or 93 octane since here in Europe the lowest octane gasoline I can find is 95. The car is running just fine without ticking noises even though is stock tune and according to manual I should use 89 gasoline. Could be that even it says 95 octane on the pump it is not really 95? I can see that in USA can only be found 87, 89 up to 93. Any input would be appreciated!