Quote:
Originally Posted by Draco-REX
You use more E85 for the same amount of air because ethanol brings its own oxygen.
If you're planning a party and know your guests will bring their own beer, you can either order less kegs or invite more guests.
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Quote:
Originally Posted by Sellout
Yeah. and you burn more of it. ALL of that works with nitromethane too. That's why I said at least some of the extra power comes from burning more fuel. When your compressor is capable of generating a max of 300 horsepower on gasoline and then on E85 you're generating over 300 to the wheels, there's more going on than a slight boost because you can run more timing.
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I'm genuinely curious about this - didn't think it had more to do with it other than extra cooling effect brought by greater fuel volume and the greater stability allowing extra timing - I always thought that you make so much more power on FI because FI (especially on a car with a high CR) requires timing to be pulled back quite a bit as boost increases. I didn't think it had to do with Ethanol "bringing more oxygen" as combustion just has to do with the reaction of the existing molecule with O2 in the atmosphere (i.e. the oxygen atom is not dissociated from the ethanol molecule). Chemistry isn't my strong suit though - I found an interesting post on it though
http://www.6speedonline.com/forums/9...-analysis.html