Loki 5.0

I read in the manual for the 2011 3.7 & 5.0. "Your vehicle will run normally on 87 octane regular fuel. Premium fuel will provide improved performance."

My question is , how long will it take for the computer to bump the timing and make whatever changes it makes for higher octane? I am guessing factory HP and torque numbers were gathered with premium in the tank.

p38fln

I believe that the engine has to be running on the "recommended" fuel for the SAE horsepower test - so it should produce the rated horsepower with 87 octane.

spdmpo

Says the same thing for Ecoboost. It left me wondering if it can sense the octane of the fuel and adjust accordingly. I know my Wife's Audi is capable of this. But when I went on to read the manual it suggested that if you are towing heavy or in the mountains and hear spark knock, that's when you go to a higher octane fuel.