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      06-15-2016, 06:02 PM   #85
lunchbox
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Drives: 335i X drive
Join Date: Nov 2012
Location: MA - USA - EARTH

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2011 BMW X3 335  [0.00]
2013 335xi  [0.00]
Quote:
Originally Posted by dr.roro View Post
If you're going intake and catback only, you probably don't need the JB4, unless you want the extra features (OBDII, Bluetooth, code reading/clearing, CANFLAP, etc).

If changing the downpipe, then JB4 is probably the way to go.

You cant pass inspection with a downpipe correct?
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