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      09-06-2013, 07:26 PM   #19
ghostchili
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Drives: 2014 335i xdrive
Join Date: Sep 2013
Location: Milwaukee

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Was looking at the JB4 Stage 2, Has anyone had any warranty problems relating to using this? Do you have to take it out anytime you go in for service?
I'm debating on ordering my car with the PPK or passing on it and installing the JB4.
Any thoughts?
http://www.burgertuning.com/N55_Stage2_Jb4.html