Thread: Jb4 help!!!!
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      11-11-2012, 10:28 PM   #6
Sara504
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Drives: 2013 335is
Join Date: Aug 2007
Location: New Orleans

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Regular service? Don't worry about it. Unless your check engine light is on. My dealership techs say they don't care as long as the jb isn't causing the issue. Mine even installs them lol