View Single Post
      07-21-2010, 02:16 PM   #9
Castel
Captain
Castel's Avatar
United_States
21
Rep
758
Posts

Drives: 335i Coupe, 2013 E92 M3
Join Date: Jul 2008
Location: Portland, OR

iTrader: (6)

Yep, Catalytic Converter. If gas change doesn't help then it might be damaged and in need of replacement. This could mean that your fuel/air mixture is too rich and this potentially damages the cats.