Quote:
Originally Posted by Element Tuning
I'm currently on E85 but I may also be running some race fuel. Trying to get more power out of this car for Ultimate Track Car Challenge which is next week so I need to move faster than I want.
I'm sure there will be a nice OEM like replacement port injector in the future. For now I'm just sharing what information I've gathered. Port fuel injection runs at 55 psi by the way.
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Rocketbrand sells E85 that is cut with racing Gasoline if you want to stick with E85 but need something stable with a higher octane value. It's good to see somebody running E85 already. That's what I'd like to do but I'm more concerned with safe, reliable power.
Quote:
Originally Posted by Element Tuning
arghx7 gave you the technical reason but I'll break it down simply for you.
If the fuel evaporates before it reaches the combustion chamber you will not have as much cooling effect. Therefore if you spray the E85 directly into the combustion chamber you have a greater cooling effect along with the extra cooling effect you get from the evaporation of ethanol vs. gasoline.
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I think Cereal is thinking about a certain supercharged experimental Lotus engine that used a pre-throttlebody injector spraying E85 instead of an intercooler. In that case it made sense but DI is clearly superior for the cooling effect.
Arghx7, was that the "E85 boost" engine that was showcased several years ago? It had a separate but smaller fuel tank for E85 that was designed to last multiple fill ups due to it only used E85 under heavy loads.