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      01-08-2013, 09:00 PM   #116
Mike Benvo
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Drives: 08 E90 M3 / 400whp Turbo 7
Join Date: Apr 2008
Location: SoCal

Posts: 4,684
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2008 BMW M3  [5.00]
1990 BMW 735i Turbo  [5.00]
2004 BMW M3  [0.00]
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Originally Posted by STi_traitor View Post
Mike, what is your opinion on gutting my OEM x-pipe 200 cells? You think that emissions would pass in the future when I put the 400 cells back on? Some guys talk down full catless with the OEM exhaust mod from what I have read.
I'm slightly confused by what you said..

The stock primaries are 400 cell, and the stock secondaries are 200 cell.

If I'm reading this right, you're asking if you will pass with the stock primaries only... I'm not sure, but I would think that it would be more than enough to pass the sniffer test. Some people squeak by with 200 cell cats.


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