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      12-04-2012, 12:46 PM   #4
Drives: '07 e92 AT Sport Montego Blue
Join Date: Sep 2011
Location: Portland, OR

Posts: 2,173
iTrader: (3)

The n54 is notorious for a slight shudder at idle almost as if it's missing. I took my car to the dealer about this issue when I first bought my car because I thought something was wrong, but now I just live with it. Plug change did help a bit, now it's not as drastic as it was in the past. Apparently it will never be the smooth running engine at idle as we would all like it to be.
Wedge1967 is offline   United_States
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