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As far as a sensor goes we do not need one on the Trackhawk we are able to do the flex fuel tune off the current computer,now if you wanted to add a flex fuel sensor to tell you ethanol content we can make an elaborate set up for that or just grab an Ethanol testing tube and test your ethanol when you fill up always an option.Received the estimate for the parts, thank you. Forgot to ask when we spoke, but will there need to be a fuel/ethanol sensor installed to truly run FLEX tune? Can we select different tunes once programmed or have to stay with only the one flashed tune?
As of now we do not have any device to hold several tunes for the end user to select we can only bench flash the 2018 model vehicles as of now. If you run the S1025 package that will give you the most flexible fuel options out there and we can set that for 91 or 93 octane to run with the E85.