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from what i understand about intake temperatures and FE they say that as a general rule that if you decrease the air intake temperature 60 degrees then the exhaust temperature is then decreased by 200 degrees and from what i understand you'll get better fuel economy because the ecu can lean out the fuel more because it's not producing as much NOx witch also adds to more power cause the engine is dealing with lower temperature air from the start so it expands more then it originally did
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