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      08-09-2009, 11:16 AM   #2
Zeph
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Drives: 2008 E92 335i 6MT SGM CR/BD
Join Date: Jul 2008
Location: Southeast USA

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You typically don't see the manufacturer ever offer anything that removes/replaces a catalytic converter. Actually I think it is illegal. Cars are emmission tested and certified before ever being sold. Even the BMW "Performance Exhaust" is really only a catback or axle-back. It keeps all stock catalytic converters in place. Which brings up another issue of how companies throw around the phrase "exhaust system" yet all they change is a muffler and tips.
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