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questions on tunes and piggy backs and warranty
I purchased a CPO 540i recently and am now getting the itch to modify. I am wondering if something happened to engine would it void warranty if they see a tune. I know you can remove some before service, but am wondering if they can detect anything in computer. I am guessing most are safe tunes that wont harm motor, but just want to make sure I didnt spend money on a CPO that will just be void due to a tune. Does anyone have feedback on this or know which systems would go undetected if removed?
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