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Old 05-28-2012, 12:04 AM   #2 (permalink)
shadoquad
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I'm not sure about the test pipes, but the Intakes may be a cause. I know that to install them, you have to mess with a sensor (I think it's the MAF sensor). If this was not properly re-installed, it may throw a code.

But there are other common causes that are not quite as serious, such as not tightening the gas cap enough.
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