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      11-03-2010, 10:55 AM   #2
usu335i
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Drives: X3MC
Join Date: Sep 2010
Location: Boise

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I'm also experiencing the same thing. The rough idle is most likely your car misfiring due to bad fuel injectors. It's quit common for this to happen regardless if the car has a tune or not. If your car is under warranty pull the mods off and take it to the dealership.
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