BULL
Oh NO! Not that guy!
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			Once you're above about E60 it's pretty good fuel and with the flex sensor golden.
		
		
	Just stumbled onto this:
https://www.stellpower.com/news-2023/dodge-challenger-srt-demon-170-1025-horsepower/
There is no special computer to install: from the factory, the Demon 170 will run on anything between 93-octane gasoline and E85, with the computer adjusting on the fly for the fuel detected. The engine computer monitors the level of ethanol in the system; when it finds more than 65% ethanol, all 1,025 horsepower is unlocked without the driver doing anything. 
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