E85 Vs Conventional Gasoline - Tech Knowledge
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On it's first set of runs using E85, Church made minor modification to the EVO VIII and gained 20 hp more than he could with gasoline. This is due to the higher energy content of ethanol at the proper air-fuel ratio (ethanol contains fewer BTU/lb than gasoline, but more of it per pound of air has to be used, meaning a net increase in energy). Next, Church advanced the timing between three and five degrees, and picked up another 15 hp. Then, he started turning up the boost; we couldn't get much more top-end power from the stock EVO IX turbo, but the mid-range came up nicely from an additional 4-5 psi of boost. View Related Article
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