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      05-15-2009, 04:47 PM   #18
askiles's Avatar
Drives: 2008 M3 Sedan - Alpine White
Join Date: Apr 2009
Location: Phoenix, AZ

Posts: 1,164
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If the CEL comes up, I will just get a tune. Easy as that. With a high flow cat, there is always a good chance of it coding. It lets more exhaust through un catalyzed than the stock one. That is what makes it high flow.

2008 M3 Sedan- Alpine White
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