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Designing a header for fuel economy (for a Metro G10 1.0L)
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12-16-2015, 03:12 PM
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RobertISaar
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oddly enough, no. I remember changing the front O2 sensor on a ~97 grand am that is a 1-wire unit from the factory. the post-cat sensor is heated though.
looking at the service manual now implies the same.
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