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      03-07-2012, 12:39 AM   #11
roastbeef
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Drives: E92 M3
Join Date: Nov 2010
Location: Orange County, CA

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i love these threads and breakdowns, thanks for sharing.

i do have a few questions;
1. does the full Akrapovic Evolution titanium exhaust system delete or replace any catalytic converters and/or trip any check engine lights? (basically, is it cali smog legal)
2. does bmw put up a fight with warranty claims with under drive pulleys?