Sometimes the internet feels like an echo-chamber where everyone repeats what they hear without any facts or firsthand experience. We see this all the time with E85, countless myths are floating around that were true 35 years ago, but not in 2025! It’s time we put one of the biggest myths we hear to rest: “You won’t make more power with E85 unless you have an ECU tune.”
Today’s video explores the science behind why eFlexFuel + E85 will make more HP & TQ without tuning.
The short of it: eFlexFuel + E85 makes power without tuning due to eFlexFuel’s dynamic fuel delivery & E85’s chemical properties working together. Watch the video below for the deep dive!
Dyno After Dyno After Dyno…
From Hondas to Hellcats, the results are the same: more horsepower and torque. We’ve dyno tested stock N/A vehicles, modified supercharged rides, and more with an eFlex kit installed on E85 Vs Gas. Sometimes the gains are bigger than others, but the fact remains: FlexFuel + E85 always delivers gains with zero ECU tuning.
We’ll continue running vehicles on the dyno to back up our claims and we won’t stop until the internet accepts this fact! If you’re reading this article, consider yourself ahead of the curve.
It’s Time to Nerd Out
Watch our science-based explanation behind eFlexFuel’s “no-tune” performance gains and look out for upcoming Fuel Wars! dyno comparison vids!
