put in 2 gallons of e85 with 10 gallons of 93 octane and your ecoboost will run like a scalded dog. My math says that'd be about e17, but, should boost that 93 octane to 94/95 range.
In my case it's bc I got my 2020 Hpp w HP , active exhaust, magneride, 101A, w 4900 miles on it for $28,900. Couldnt get a spec'd out GT for anywhere near that price, and that pricew also happened to match my on hand funds and i bought it cash, so, no brainer in my case.
I also love rare car...