Quote:
Originally Posted by Toprivetguns
Am I right in saying more bio-fuel means less octane, hence more throttle to achieve the same performance, then more cost in the long as your using more fuel.... You get where Im going.
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It's more about the lower E10 energy content than the octane rating (which is corrected with additives).
The other thing about E10 is that the stoichiometric ratio is around 14.1:1 rather than 14.7:1 for unleaded. I'm not sure how the ECU map handles that.