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      12-03-2012, 01:12 PM   #11
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Drives: M5(sold), 135i(sold), 335d
Join Date: Sep 2011
Location: NY

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Originally Posted by CT_335D View Post
Question about the JBD upgrade. If I install the JBD performace tuner, does it void the CPO warranty? The CPO warranty covers all the major parts for a total of 6 years or 100,000 miles. I really want to get the JBD performance tuner, but I don't want the dealership to tell me that my warranty is VOID because of it, when something happens to the car. Or do I just remove it before bringing the car to the dealership so they never see it?
Remove it. Also make sure there are no codes associated with a tune in the BMW ECU. They can Void Warranty if they want to.
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