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Old 10-15-2012, 08:27 AM   #20
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Join Date: Jan 2011
Location: Connecticut
Posts: 172
My Ride: 2004, 330XI
Originally Posted by redbull 325is View Post
Sometimes a bad pcv will not cause oil issues, but the bad membrane will allow for extra un-metered air to enter the intake manifold from the crankcase and cause the fuel trims to be off. With that in mind and how cheap they are (under $200) i'd definitly do it before the car starts misfiring like a pig and throwing cels.
Do I need to upgrade the CCV to the cold weather kit? And what's the difference and gain benefit?

Thanks much!

Last edited by Mhnd; 10-15-2012 at 08:29 AM.
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