I had Tim Barth do a flex fuel setup on my 2020 Charger Hellcat. It was true flex-fuel, and the sensor had a bluetooth connection to an app on my phone where I could monitor the ethanol percentage. On 93, I was hitting 789 rwhp. Literally emptying the tank and filling up with E85, I was getting 883 rwhp. The car was a completely different animal on e85, even sounded completely different.
Additional mods were 2.78 pulley, ID1300 injectors, green belt, crank pin, 180 degree t-stat, JLT intake, and all tuning. All said and done, it was just short of $7k. And worth every damn penny!
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