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      08-31-2011, 11:20 PM   #4
Legion5
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Drives: e92
Join Date: Dec 2007
Location: USA

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This is a trick used on almost all modern cars. The engine will idle below the point where it would die if left unattended and then it increases it's revs for split seconds to save itself from dying. This is just a common trick used to save gas.
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