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Old 01-16-2013, 08:55 PM
ian@jewelorjalopy ian@jewelorjalopy is offline
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Location: Portland, OR
Join Date: Dec 2012
Posts: 28
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Mein Auto: 2000 540it Sport - sold
Nope, what Ed says. They are only there to measure the cat efficiency, and will tell you when they go bad. If they don't throw a code, keep them.
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