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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 08-26-2012, 02:39 PM
KayWhitt107 KayWhitt107 is offline
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Mein Auto: 2012 335i xdrive
Catless down pipe

Hey guys. So tomorrow I'm getting my OEM exhaust modded by taking out the cat and making it a straight pipe, adding a catless down pipe, and a jb4 tune. My question is will my car pass inspection? I know it wouldn't pass a visual inspection but I highly doubt my shop does that. Thanks!
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  #2  
Old 08-26-2012, 03:26 PM
twhisten twhisten is offline
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It most likely will not pass the emissions inspection.
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Old 08-26-2012, 03:38 PM
KayWhitt107 KayWhitt107 is offline
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Quote:
Originally Posted by twhisten View Post
It most likely will not pass the emissions inspection.
Even with the 02 sensors?
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Old 08-26-2012, 08:00 PM
MRU MRU is offline
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Quote:
Originally Posted by KayWhitt107 View Post
Even with the 02 sensors?
Yes, even with the O2 sensors.
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  #5  
Old 08-27-2012, 02:34 PM
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Verts4Ever Verts4Ever is offline
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Location: Phoenix West Valley
 
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Mein Auto: 2011 E93 335i
Quote:
Originally Posted by KayWhitt107 View Post
So tomorrow I'm getting my OEM exhaust modded by taking out the cat and making it a straight pipe, adding a catless down pipe, and a jb4 tune.
Nice, Kay. You'll get a noticeable power bump out of that combo.

Quote:
Originally Posted by KayWhitt107 View Post
My question is will my car pass inspection? I know it wouldn't pass a visual inspection but I highly doubt my shop does that. Thanks!
No, you'd need a DP fix to trick the DME into seeing an acceptable signal from the O2 sensor. The JB4 auto code-clearing function is not the same thing.

Until now there hasn't been a DP fix available for the N55, but you can read here about BMS currently beta-testing one. If you eventually add the DP fix and pass the OBDII inspection, there's a chance that your shop won't lift the car for visual inspection. If it does lift the car, you'll likely fail the inspection.

Cheers.

Last edited by Verts4Ever; 08-27-2012 at 02:36 PM.
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