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General E46 Forum
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Old 06-06-2013, 11:44 PM   #1
Lunatic
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curious

I've heard that the muffler has nothing to do with smog but not to sure, I'm thinking of a muffler delete nd adding some custom tips......but my only worry is being in CA will I pass smog visual or even the actual test??
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Old 06-06-2013, 11:57 PM   #2
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As I understand it the muffler only changes the noise level. You should be fine passing smog.
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Old 06-07-2013, 12:14 AM   #3
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curious

You will fail it in Cali.


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Old 06-07-2013, 12:47 AM   #4
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I don't understand why you'd want to just remove it in the first place? There isn't really any benefit
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Old 06-07-2013, 12:51 AM   #5
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Damn California! You should pass though
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Old 06-07-2013, 08:32 AM   #6
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Has any body done it? Passed a smog inspection in Ca with a muffler delete? Ik NY also has smog but it's test have different standards by what I understand. It didn't give any performance advantages but I like the sound.....right now I have an OBXR muffler nd its to quiet for my liking ***55357;***56850;
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Old 06-07-2013, 09:53 AM   #7
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Look up DT exhaust, knockoff of magna flow half the price and sounds good.
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Old 06-07-2013, 10:30 AM   #8
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I think it would pass, because there are also the two resonators in the system. Ultimately, it's up to the smog guy, some are more strict than others.
What I'd do is to attach the replacement pipe with clamps, not weld, that way I could re-install the muffler for the test, or if you want the muffler back on.
One other thing: if you expect power gain from that, don't waste your time!
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Old 06-07-2013, 10:34 AM   #9
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Quote:
Originally Posted by katu View Post
As I understand it the muffler only changes the noise level. You should be fine passing smog.
Bingo.

If its under 90 or 95 db you'll be fine. That's not usually checked by smog shops though, just the state referee when the police think your car is too loud
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Old 06-07-2013, 10:40 AM   #10
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Originally Posted by lszlszx View Post
I think it would pass, because there are also the two resonators in the system. Ultimately, it's up to the smog guy, some are more strict than others.
What I'd do is to attach the replacement pipe with clamps, not weld, that way I could re-install the muffler for the test, or if you want the muffler back on.
One other thing: if you expect power gain from that, don't waste your time!
Good idea thanks for the info nd yea I dont expect any gains....but will it lose power??
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