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Old 09-13-2012, 07:07 AM   #13
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Join Date: Mar 2011
Fan#: 84300
Location: Canton, MI
What I Drive: 2011 Ford Focus SES

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Comparing engine Dyno to chassis Dyno is impossible without knowing the actual drivetrain losses. Maybe the loss is less than 15-18%?. The 2013 GT500 is a good example of reduced losses. Lets not leave out dyno accuracy. If believing the ST makes 267 horsepower or what ever makes you happy, then so be it.
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