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      02-08-2007, 10:58 AM   #1
andyc
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335i Exhaust and emissions

Hi I would like to know a few things about the US and its emissions regulations.

I would really like to slap on a full exhaust system on my 335 with a complete removal of all CATs in the system.

1) how do you go about this without getting in trouble?
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      02-08-2007, 11:08 AM   #2
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You don't do it.
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      02-08-2007, 11:13 AM   #3
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Quote:
Originally Posted by andyc View Post
Hi I would like to know a few things about the US and its emissions regulations.

I would really like to slap on a full exhaust system on my 335 with a complete removal of all CATs in the system.

1) how do you go about this without getting in trouble?
That's an oxymoron. You can do it, but it depends on your luck.

I don't know about your state, but in Cali, the fine is heavy for not having the cats. Around $2,000 I believe. Your car will also be incredibly loud as well. Personally I don't think it's worth it because I don't like the smell of sulfur and I don't want to take a risk getting caught without running cats.

I have numerous friends who run straight pipes on their cars, some get stopped by the police and some don't. It depends on your luck, IMO.
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      02-08-2007, 01:09 PM   #4
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I'm based in boston, MA .. anyone here got experience with running catless system here?
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      02-08-2007, 01:10 PM   #5
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Originally Posted by wj4 View Post
Your car will also be incredibly loud as well. Personally I don't think it's worth it because I don't like the smell of sulfur and I don't want to take a risk getting caught without running cats.
Well I ran a catless 3 inch complete exhaust with my evo 7 and it wasnt that much louder then the 3 inch with a cat. I find that the benifits outweigh the cost
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      02-08-2007, 02:53 PM   #6
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leave the cats its sounds crappy without em'. Get a less restrictive exhaust.
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      02-08-2007, 03:48 PM   #7
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have you listen to the exhaust note with the cats removed first hand? If so, post a clip please
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