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SVTPerformance's Chain of Restaurants
The Distillery
E54: Facts compared to E85?
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<blockquote data-quote="JeremyH" data-source="post: 15797571" data-attributes="member: 160292"><p>To answer the original question yes the more ethanol you run the more power you will make and more potential to go up there. It's the physics of the increased mass of the fuel that's being injected cooling things down and creating more oxygen during combustion. The volatility and lack of energy in ethanol is what makes it great for power production and boost. Because there is less energy in it, you are putting way more volume of fuel into the combustion chamber prior to ignition. This increased mass with ethanol's properties is what straight up makes more power when stuffing air in regardless of the ability to run hotter iat's or add timing. </p><p></p><p>Seen a gain in 40rwhp going from e85 to e98 at the same boost and timing level, just a change to stoich in the tune. The 2% gas is only left in the blend at this point for lubricity. </p><p></p><p>This is not to say there are no benefits to running lower percentages as well for your setup and goals.</p><p></p><p></p><p>On to the second part its volume of fuel your moving which dictates they eventual need for a return system. You can always beef up pumps baps lines and push returnless. But it does have inherent flaws at high volume flow rates.</p></blockquote><p></p>
[QUOTE="JeremyH, post: 15797571, member: 160292"] To answer the original question yes the more ethanol you run the more power you will make and more potential to go up there. It's the physics of the increased mass of the fuel that's being injected cooling things down and creating more oxygen during combustion. The volatility and lack of energy in ethanol is what makes it great for power production and boost. Because there is less energy in it, you are putting way more volume of fuel into the combustion chamber prior to ignition. This increased mass with ethanol's properties is what straight up makes more power when stuffing air in regardless of the ability to run hotter iat's or add timing. Seen a gain in 40rwhp going from e85 to e98 at the same boost and timing level, just a change to stoich in the tune. The 2% gas is only left in the blend at this point for lubricity. This is not to say there are no benefits to running lower percentages as well for your setup and goals. On to the second part its volume of fuel your moving which dictates they eventual need for a return system. You can always beef up pumps baps lines and push returnless. But it does have inherent flaws at high volume flow rates. [/QUOTE]
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SVTPerformance's Chain of Restaurants
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E54: Facts compared to E85?
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