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      04-10-2012, 07:06 PM   #18
desean81
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Drives: 2010 BMW 335i Coupé
Join Date: Apr 2010
Location: Toronto, ON

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Quote:
Originally Posted by itsmeek View Post
Cars with no cats on them STINK. I'm too old for it, and the minimal performance gain just isn't worth it. Drive one in DC traffic then get out of your car an hour later. You will smell like exhaust fumes.
Thank you! Finally someone who's making sense. The smell is horrid with no cats at all. I can't believe people run like this in their daily driver.

I think I've decided on an approach to try. I'm going to get some cats welded in to the exhaust section near where the original secondary cats were. I'm also going to take some advice from others that have suggested heat wrapping the exhaust to the cats to keep most of that exhaust heat in so it reaches further back in the exhaust more quickly. I think this should cure the smell problem and as I've heard it's possible to keep it legal (pass sniffer test) with just secondary cats I think the heat wrap will help go the extra mile and heat the cats up more.

Hopefully it works out!
Appreciate 0