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If the car is a daily driver, then leave it be. The EGR helps lower combustion chamber temperatures. Escpecial during highway cruise. At highway cruise the Air/fuel ratio leans out to conserve fuel but in turn that creates higher temperatures which will make the engine run hotter. Thats when the EGR opens up to lower the temperature to prevent a over heat condition or even worse melting a piston.
Last edited by Fast92RS; 11-07-2008 at 11:22 AM.
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