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Old 08-23-2010 | 04:50 PM
  #1255  
ghoffman
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Default RE: SAP 180 (Syssa Performance)

No, the energy content is the same, regardless of octane. However, 100% gasoline has about 4.5% more energy than 90-10. If we could buy 100% 87 octane gas, it should be the same as the NASCAR gas on a relativity low compression engine like this.