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      01-28-2013, 01:07 PM   #4
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Drives: AW E92 M3
Join Date: Oct 2008
Location: Los Angeles

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Quote:
Originally Posted by blankstar43
may be interested, but is there any reason somebody couldnt use the euro spec version? Are the secondary sensors needed for some reason?
A cel light will pop up on your dashboard with a "increased O2 emissions" notification on your nav screen. A race tune such as ess, evolve, etc can delete the cel lights. But as far as performance goes, I never had any problems with the xpipe. You don't need secondary O2 sensors because the xpipe only has high flow cats.