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      03-12-2012, 10:02 AM   #9
TroyDeJ
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Drives: around aimlessly
Join Date: Nov 2010
Location: Long Island

iTrader: (1)

EGR is probably the best explanation. My other guess is just from exhaust gasses from other cars that pass by the filter and stick to the throttle plate because the intake manifold after the TB was clean