Quote:
Originally Posted by Piotrsko
Afaik, on a flex fuel usa car, the conditions map was increased to accept out of parameter temperature conditions caused by the alcohol. IE: different exhaust temps with no corresponding other symptoms would now be acceptable then add more or less fuel.
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It's the same elsewhere. What I meant is, as most cars with EFI have oxygen sensors anyway, some folks actually tried to run on ethanol on non-flexfuel models expecting the EFI and ignition to compensate. Sure a CEL might be triggered once the ECM is not programmed specificly to handle a higher amount of ethanol.