Thread: N55 JB+
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      05-31-2012, 09:57 AM   #7
Mike@N54Tuning.com
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Drives: 2007 335i, 2015 M3
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Quote:
Originally Posted by Army335xi View Post
JB3 takes all of 10-15 minutes to install, hardest part is removing the air box..

JB4 probably doesn't take that much more time..
You don't need to remove the air box to install the Stage1

Mike