I assume that the question about E is being asked as a source of added hp. With that said, there are dozens of cobalts running 50/50, as 1panel2nv mentioned they may have several mods, but the only thing needed to run the E is a tune. Does thier gas mileage go down? I'm sure when one adds 30-40hp a decrease in fuel econemy might be expected. Does it increase longevity? I think most of the guys out there in search for more power know the consequences of increasing power.

I don't know of any HHR SS's running E...so go for it, lay claim to the first hhr ss on E! (that is if in fact you would be the first)

 

Yup. Right up to the point it breaks. Then they call the vehicle garbage and try to get it covered under warranty.

 

Why would they include the fuel sensors on cars if they don't have to? Most flex fuel vehicles also come with larger injectors. It's all about the money.

 

I used to think ethanol may be a good idea , until I found out that it decreases performance as well as it increases fuel consumtion and it takes more energy to produce it ...Ethanol is anouther scam..

 

I agree with you, to a point, catdaddy. And, essentially, for the reasons you suggest. It is a scam for the use in DUAL FUEL vehicles. However, if a vehicle is built and tuned for it's use, it could provide a reasonable alternative. Notice that NASCAR uses it in all sanctioned events....again built tuned...

 

And whats used to cook down the corn? And how much?

 

Sensors are oldschool for GM, think S-10. It's being done with software on most of the newer cars.

 

I don't like doing this, but from SI:

E85 compatible vehicles no longer use an alcohol sensor to determine and adjust for the alcohol content of the fuel in the tank. Instead, the vehicle calculates the alcohol content of the fuel through measured adjustments.

The ethanol calculation occurs with the engine running after a refueling event has been detected via a measured change in the fuel level sender output. The virtual flex fuel sensor (V-FFS) algorithm temporarily closes the canister purge valve for a few seconds and monitors information from the closed loop fuel trim system to calculate the ethanol content. This logic executes several times until the ethanol calculation is deemed to be stable. This may take several minutes under low fuel flow conditions such as idle, or a shorter time during higher fuel flow, off-idle conditions.

Air-fuel ratios and the corresponding ethanol percentage are updated following each purge-off sequence. the fuel alcohol content percentage value can be read on a scan tool.

When an E85 compatible vehicle is built, an ECM replaced, or if the learned alcohol content has been reset with a scan tool the fuel system will need to contain ASTM gasoline with 10% or less ethanol content.

A minimum of 11 Liters (3 gallons) must be put in the tank in order for the vehicle to recognize a re-fueling event. It is not necessary to turn the ignition off in order to have the re-fueling event recognized; however local safety regulations should be followed.

After the re-fueling event, the system registers the amount of fuel that was added, relative to the amount that was in the tank. Reading fuel trim and O2 sensor activity, the system determines if the fuel added was either ASTM Gasoline or ASTM E85. Based on that determination, the system adjusts to the expected alcohol mix in the fuel tank, and then the fuel trim and O2 sensor activity fine tunes the adjustments. The system must remain in closed loop in order for this adjustment to occur. Numerous short trips after switching from gasoline to E85, or E85 to gasoline, can result in driveability symptoms due to the inability of the system to adjust for fuel composition by not attaining closed loop operation.

Switching Between Gasoline and E85
No special precautions need to be taken when switching back and forth between gasoline and E85 other than re-fueling events must be 11 liters (3 gallons) or greater, and the vehicle must remain in closed loop long enough, usually by the time the engine has maintained full operating temperature, to calculate the composition of the new blend in the tank.

 

^^who said anything about switching between the two

 

um I'm pretty sure that it was established by the op in post #1 that it would require a tune to run E right? well then, there went the warranty then right???