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      12-01-2012, 04:21 PM   #7
Mirko
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Drives: E86 Z4M, E90 328i, E84 X1
Join Date: Apr 2011
Location: Toronto

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Quote:
Originally Posted by inTgr8r View Post
IIRC, Its Emissions relate
WHS ^^

Some have gone to dealer for warranty work and were denied by not having that filter there. There is a thread on it.

Also there is a tuner out in Vancouver who removed and dyno'd 1hp increase.

I've removed it and put it back. Can't feel any difference. Might as well keep it there.
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