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You are not incorrect. The millage on my sonata went up at least 2mpg on average after I sheared off the second oxygen sensor going up a parking garage ramp. I'm considering taking a sledge to the engine bay in search of more gains.
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You are not incorrect. The millage on my sonata went up at least 2mpg on average after I sheared off the second oxygen sensor going up a parking garage ramp. I'm considering taking a sledge to the engine bay in search of more gains.