Thread: Daily Driver Review: Performance Power Kit S1 - N55 335i
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      05-28-2012, 12:30 AM   #150
kellym335
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Drives: 335xi Silver
Join Date: May 2012
Location: Troy, MI

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Quote:
Originally Posted by Noncom23 View Post
Anyone else notice RPM surging up and down at cold start?
As it warms it idles more smoothly?
I had the same thing happen to me this morning, first time.
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