Thread: N55 JB+
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      05-31-2012, 10:46 AM   #8
Army X5 S5
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Drives: '11 X5 35i / '13 S5
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Originally Posted by View Post
You don't need to remove the air box to install the Stage1

On the N55 X5 it makes it a lot easier to do... Sorry, I forgot this is E9x... SO yeah, removal of air box isn't necessary...

BMW X5 35i: Boopie Exhaust, Boopie Intercooler, K&N Drop in Filter...
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