It has to do with having proper fuel tables for starters. If you read, it requires 15%-20% more fuel to burn, and on top of that(gotta read a bit into the whole thread), the emissions to register on the sensors the same. It would have to be calibrated to it. It talks about that in the thread a little bit.


P.*. Sorry for the thread jack.... [/threadjack]

Ya, E85 vehicles have bad mileage. Almost takes away from the lower cost. However, in my case $3.20 vs. $2.50 its worth it. Lets say if I could do it it I would.