Originally Posted by
GraphiteGhost

Great comments! A reminder to many, the ECU has a fuel table that modifies performance within sensor/hardware that by design limits damage/performance (fuel/air vs designed/installed sensors), THIS is why filling with 91 octane is not as bad as some who poo-poo this, as they believe the more they spend the more righteous they sound about the subject. Thank you for mentioning this! Happy Perma-Grin folks! Flame away (those who choose to), I can take it, BUT it'll fall on deaf ears...
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99% of preformance cars only need 93 oct when the peddle is on the floor, Very few car manufactures will tell you to use 87 oct or, 93oct for more power,, but ford does on a 2016 fusion turbo it says 87 oct is 210 hp or with 93 oct gas 235hp ,, i am going by memory so don't quote me on the hp but i know i am close jim
I remember seeing a Modern Marvels on gasoline and they repeated that several times ,,, and all 93 oct gasoline is the same, so is all the 87 oct,, the additive is added just the gas in put into the tanker trucks ,there are usually 3 different sections on each truck,one for 93 one for 89 and one for 87 . jim