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  1. 2014-2018 Mazda 3 Skyactiv Engine and Performance
    Quick question. Did a quick search around here seeing if there is a way to reach the 14:1 compression ratio the non-US 2.0 liters have. I was simply wondering if it was either a thinner head gasket or a different set of pistons. Granted it could be something completely different, but if it...
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