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Allch Chcar

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Posts posted by Allch Chcar


  1. You might not need to change your filter if you've run E10 on it for the life of your vehicle, but keep that in mind if it becomes sluggish or has issues after some time. I've never had to change mine.

     

    Exactly.

     

    I tried to ask a couple of the Fitfreaks about E85 in their cars but after debating whether it would even run on E85 we ended up arguing about whether Ethanol would even combust at lower compression ratios. ??? That was in the E85 thread so it was a waste of time.


  2. I agree with Rusty. As far as emissions isn't CARB regulations effectively eliminating all new FFVs from California and the 13 or so states that follow Cali emissions? It seems like none of the new FFVs are Cali legal, for example the new Focus FFV was only approved for Federal emissions while there is still a separate Cali engine.


  3. Wasnt part of the reason because running E100 they couldn't see the flames during wrecks.. switching to E85 ..that 15% gasoline will smoke and flame more visible during wrecks

     

     

    Anyway ..pretty cool to Indy running E85 .  E85 should get a lot of extra press this weekend

     

    Having just watched a video of a Methanol fire for a formula car the other day I say very likely. In the video I watched the driver and one of the crew members were on fire at some point and they had to physically beg people to be sprayed with the flame retarding mix to put the fire out since it was completely invisible.


  4. I haven't done it myself but I know where to start. First you find a local tuner for your car, you can checkout car forums if you can't find a reputable tuner in your area. If you take it to a local shop they tune it on a dynamometer. They give you 3 tunes onto the actual tuning device which plugs into your car so that you can pick one and load it up. You can get tunes for octane like regular or premium or E85 tunes. Sometimes they have tunes for power, safe tunes(custom setups), or torque tunes which are also known as fuel economy tunes.

     

    You can also get a tune from a tuning guru from a distance. For example Focaljet has a guy that can send you a good basic tune, he provides tunes that can work in different areas with different setups but only for the Focus engine. You need to make sure they have tuned on E85 before but local guys that can get readings from the car are still better than "mail order" tunes because they can customize it to your engine.


  5. Well only two failed but one failed the durability test which might have been an application problem. :D Technically 4 passed or were waived on E20 and subsequently E15. I think this needs further study as this is a small sample.

     

    I'm actually curious how the two engines that failed would do on E10. They might have not be designed properly for Ethanol compatibility! It could just be a coincidence that two of the engines are older with high mileage. The Honda CRV and the VW engine are my suspects for the engines that failed.

     

    My guess for the engine that failed catastrophically is the almost new Chevy Aveo. ;D ALthough the Dodge Ram engine could have...


  6. Okay then. As usual I thought I knew what I was talking about while rambling on incessantly. :D

     

    And like most things that get "worried about later", making these cars FFVs may just end up buried... I sure hope this is not the case.

     

    The Focus went FFV after a couple months, so it could always happen later. I am still curious if the fleet sales affect how likely it is to become a FFV. :-\


  7. Example.

    Gasoline stoich is 14.7:1 which has a Lambda value of 1.0

     

    Ethanol stoich is 9:1 which has a Lambda value of 1.0

     

    Lambda 1.0 on Ethanol is not the same amount of fuel as Lambda 1.0 on Gasoline because they have vastly different stoichiometric air:fuel ratios. But the Oxygen sensor will still report a 1.0 Lambda Value for both scenarios.


  8. No, it's you who doesn't get it.  The stoichiometric ratio is different for E85 than it is for gasoline.  E85 runs at stoichiometric at about 9.8:1 air to fuel.  Gasoline is 14.7:1.  When running with either of these fuels at their respective stoichiometric ratios, the lambda value given by the oxygen sensor will be 1, but the actual amount of fuel going into the engine will be much greater with E85.

     

    The computer, which sets the injector pulsewidth, knows exactly how much fuel is going into the engine.  In order to achieve a lambda value of 1, the fuel trim needs to be higher for E85.  The reality of the situation is that the oxygen sensor doesn't have a clue what fuel you're running.  It just analyses the exhaust gas and reports that to the computer.

     

    A wideband O2 sensor can be useful for running at ratios other than stoichiometric, but it cannot replace a fuel composition sensor.

     

    The oxygen sensor doesn't read the Air:Fuel ratios, it reads everything on a scale where Stoich = 1.0 higher is lean while lower is rich. All fuels report the same value for stoich as it is independent of the true air:fuel ratio.

     

    A narrow band is the same but it cannot read anything outside of stoich.


  9. No, you're still not getting it. Anything above Lambda 1.0 is lean. There is no "setup" for fuel type. Stoichemetry is the same value for all fuels; gasoline, ethanol, and methanol. The purpose of a wideband is to read Lambda values outside of the narrow range of Stoichemetry, people use them for tuning because the narrow bands cannot read anything outside of Stoich.

     

    The Oxygen sensor does not rely on the ECU values for it's reading.


  10. Don't laugh, ethanol can get into the oil and it does attract water which can make it separate and become highly corrosive. I'm not saying I believe 100% what they say(the closing comment was that we should eat the corn/feed it to livestock and not burn it ::)) but if fuel was getting into the oil that could cause a problem. I'm thinking maybe a stuck open thermostat and a worn piston rings. I dunno how long that would take to destroy the oil cooler, I doubt it could harm the radiator since anti-freeze uses a corrosion inhibitor.

     

    Obviously the article was designed to be controversial. But that doesn't mean it's completely untrue and should therefore be ignored. People will read and believe this without question and the points they made needs to be addressed. :-\


  11. I'm telling you, the oxygen(Lambda) sensor would know exactly what the proper Air:fuel ratio is whether it's in open loop or during closed loop, where it always maintains stoichemetry. If the ratio was lean due to a fueling problem the oxygen(Lambda) sensor would report a CEL for a lean condition. It's really that simple. If it's outside of the wideband range(which is limited) it'll report a CEL for out of spec condition.

     

    Now if you had an exhaust leak prior to the oxygen(Lambda) sensor, that could cause a problem, maybe?

     

    Edited.


  12. It's not a scam and they can be FFV without the fuel sensor if they use a wide band Oxygen sensor instead of a narrow band. It's a $150 part vs the $350 fuel sensor. Many new cars are coming from the factory like this for emissions/MPG. I found this out when the guys were looking at the exhaust setup for the FRS/BRZ and mentioned that Subaru has been using wideband oxygen sensors for several years now. I know Honda has been using this for lean burn and I can think of a couple other cars including GMs that used a factory wideband over 10 years ago.


  13. One gallon of Ethanol reduces demand by one gallon of Gasoline? How does that work if Ethanol has less energy content? Simply because they have the same volume maybe?

     

    Not to mention there are studies on how much of a savings Ethanol has on Gasoline prices. Not all of it is the effect of the lower price per gallon but also the reduced demand from having a competing product.

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