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      12-28-2011, 09:17 PM   #317
mike-y
just another bmw douche bag
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Drives: 1.9L of fury
Join Date: Nov 2008
Location: Los Angeles, CA

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I'm pretty sure those are caused by the actuators opening up in the manifold. it must cause some turbulence for a short amount time when that happens, which affects power. Mine does something similar, but I was also having an issue with running too rich.