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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Another E92 328i and Another Dual exhaust job



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      06-15-2013, 11:11 AM   #23
Ben0426
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Originally Posted by willsull80 View Post
No not at all black smoke means you are running way too rich or you have a diesel
Thank you sir
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      06-15-2013, 11:34 AM   #24
willsull80
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Did someone tell you it would smoke if you did that??
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List of Mods: 1/4 tank of gas (for weight reduction), cut hole out behind gas pedal for more throttle.

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      06-15-2013, 11:47 AM   #25
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Did someone tell you it would smoke if you did that??
yep, a friend told me if I cut my 2nd cat and res the car will blowout black smoke and its illegal here in Australia, just want to make sure I will not get into any trouble. I really like your setup, really want to do the same.
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      06-15-2013, 12:06 PM   #26
willsull80
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The second cats just convert the little bit of gasses that the primary's do not catch. As for smoke you will always have a little brown smoke on hard take off. As or emission test I'm not sure how strict the tree huggers are in the land down under. As for here in Alabama it's pretty much if it runs its ok. (No emission tests)

As for the res it's basically a pre muffler nothing to do with emissions.
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List of Mods: 1/4 tank of gas (for weight reduction), cut hole out behind gas pedal for more throttle.

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      06-15-2013, 01:34 PM   #27
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Thanks, I will go to another or two muffler shop next week and ask the professional again. Hope I will have "willsull80 style" dual exhaust on my car very soon. Thank you very much for your great and fast respond.
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      06-15-2013, 01:40 PM   #28
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Damn bro I thought I didn't like sounds from exhaust on the bmw, but you got me liking it!!!!!
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      06-15-2013, 01:53 PM   #29
willsull80
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Originally Posted by NorthernCAE90
Damn bro I thought I didn't like sounds from exhaust on the bmw, but you got me liking it!!!!!
Thanks, as soon as my buddy mike gets off his duff and paints my bumper ill get some drive by vids. He had had It for 2 weeks and it just needed some touch up work. Ha sometimes it's just better to pay money instead of trading work...
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      06-15-2013, 01:58 PM   #30
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Quote:
Originally Posted by Ben0426
Thanks, I will go to another or two muffler shop next week and ask the professional again. Hope I will have "willsull80 style" dual exhaust on my car very soon. Thank you very much for your great and fast respond.
I got this idea from another guy who posted his dual setup. He used. 1 in 2 out muffler and moved his canister to the same spot as mine. He just didn't go into detail on his setup that well. When it came to canister movement which is probably the most difficult thing in this whole setup.

The dual in 2.5 dual out 2.5 muffler is a lot less restriction on the system and has more over all area for exhaust to travel through as a result creating less back pressure

http://www.e90post.com/forums/showthread.php?p=7937398
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List of Mods: 1/4 tank of gas (for weight reduction), cut hole out behind gas pedal for more throttle.

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      06-19-2013, 09:08 PM   #31
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Good Job Dude!
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