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The BMW Range
5 Series
E39
Catalytic Converter
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<blockquote data-quote="astroboy" data-source="post: 302579" data-attributes="member: 4527"><p>But I thought there's a pre-cat and post-cat sensors in our BMW? The pre-cat obviously check the combustion lean/rich mix while the post-cat is to examine the exhaust emission to ensure the cat in in good working order.</p></blockquote><p></p>
[QUOTE="astroboy, post: 302579, member: 4527"] But I thought there's a pre-cat and post-cat sensors in our BMW? The pre-cat obviously check the combustion lean/rich mix while the post-cat is to examine the exhaust emission to ensure the cat in in good working order. [/QUOTE]
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