E85 conversion kits experience?

[danielk]

Hey, does anyone have positive or negative experience with any of the E85 conversion kits available? Etanizer, FlexTek etc.
What's important to me is the fuel consumption -- has it gone much higher? Did you install pulse spark plugs (Pulstar?) and/or some high performance air filter?

[johnny95sl2]

I have not installed a fuel tank conversion kit. I have to believe that your mileage will go down when using E85 as it contains less energy than an equivalent qty of gasoline.

[crispyjones]

We have a few multi-fuel capable vehicles in our fleet. When running E-85 we see around a %20 decrease in mileage. To be competitive E-85 must cost at least %20 less than gasoline prices, so if gas is $3.50 E-85 would have to be $2.80 or lower to make sense. Only in rare occasions have we found it worthwhile to run E-85.