I like the idea. It is hard to see the "lower" prices if E85 when you cannot add it to your tank. It would be nice if the sensors could know the difference between regular gas and E85 to automatically set the gas flow appropriately much like a flex fuel engine but without the loss in mileage when using E85. I also question the use of E85 when it comes to the "real" cost. The actual cost of the ethanol based fuel is rumored to be so much higher that it feels as if we are robbing Peter to pay Paul. More to come I am sure...

It can pay you to be skeptical with people who want you to pay them with claims that you will save money. The oxygen sensor is not affected by the fuel. It reads the exhaust gas to see if all the fuel was burned. If you change it's reading, your car will be out of tune. Ethanol gets fewer miles than gasoline because it contains less energy to convert into miles than gasoline. Ethanol has 12,800 btu/lb Gasoline has 20,400 btu/lb Ethanol has a higher octane rating which could be used in the design of an engine to improve the efficiency but then the engine would not be useable on gasoline. If people had been skeptical earlier, we wouldn't have been paying subsidies to artificially lower the price for a fuel that uses up additional energy, uses up clean water, and raises the price of food.

It can pay you to be skeptical with people who want you to pay them with claims that you will save money. The oxygen sensor is not affected by the fuel. It reads the exhaust gas to see if all the fuel was burned. If you change it's reading, your car will be out of tune. Ethanol gets fewer miles than gasoline because it contains less energy to convert into miles than gasoline. Ethanol has 12,800 btu/lb Gasoline has 20,400 btu/lb Ethanol has a higher octane rating which could be used in the design of an engine to improve the efficiency but then the engine would not be useable on gasoline. If people had been skeptical earlier, we wouldn't have been paying subsidies to artificially lower the price for a fuel that uses up additional energy, uses up clean water, and raises the price of food.

That's why you get less mpg! It has 30-40% less energy potential, so that's why you see that drop in your mileage. It has nothing to do with poor calibration, flex fuel vehicles have that part down and still get crappy lieage with E85.

Sorry about the double post. The need for stupid ads on the web page cleared the comments twice before I was done. When the page returned without the comment after the third attempt, I tried again. It also appears to have removed all the formatting.

Ethanol also burns cooler than gas, your engine runs richer at startup to raise the temperature sooner for better gas economy. With Ethanol that doesn't happen so the microprocessor has the engine running richer longer using more fuel. Why to race cars use Ethanol if it is so much lower power than gas? Think about it!

Which means they can run higher compression and higher boost levels. It still takes more fuel to get the power out. To get the same octane gasoline, they have to go to specialty gas stations and pay an arm and a leg for it. It's much cheaper using the highly subsidized ethanol to get the higher octane. It's also easier to come by.

that it's oxygenated. Meaning you can get more fuel in with less air. Anyone who has built an E85 performance car can tell you one thing that is different than building for gasoline. You need much bigger injectors. Which goes with what I was saying before. You need bigger injectors because it takes more fuel to make the same power. That would confirm what I was saying about lower energy potential. I'm not the one that needs to think about it, I already know the real answers. It's funny seeing the psychology of someone trying to prove what they know little about though, so try thinking harder.

I see no point to using E85. E85 only has 60-70% of the energy of gasoline so the price should only be 60-70% of the price of gas. If you do the math you will see the price is much high than that, so you are actually losing money using E85. I have also watched the price of E85 march up lock-step with the price of gasoline, when E85 is only 15% gas. Did the price of production of E85 exactly go up with the price of gas? Or are we getting gouged by the makers of E85? I'll let you decide.

"Ethanol also burns cooler than gas, your engine runs richer at startup to raise the temperature sooner for better gas economy. With Ethanol that doesn't happen so the microprocessor has the engine running richer longer using more fuel. Why to race cars use Ethanol if it is so much lower power than gas?" Holy cluelessness, Batman!