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Old 11-07-2011, 06:15 AM   #9
Registered User
Join Date: May 2011
Location: Woodstock
Posts: 77
My Ride: 03 330Ci
I bought these to replace my stock coils when 4 out of the 6 went bad also put in new NGK plugs while i was in there. Since the instalation of these i have been getting rough idle with misfiring codes and the infamous P0171, P0174 Bank one & two lean weather that has anythig to do with the new coils or not just figured it was werid that the first start up after installing these coils i get these codes.

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