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      09-05-2011, 09:20 AM   #5
DOOBEE
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Drives: 2008 M3
Join Date: Aug 2011
Location: Newmarket, Ontario, Canada

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I don't think they can void your warranty for those mods, Dinan or not. They would need to find a way to directly show these components were directly responsible for a failure. My 08 has an exhaust, aftermarket filter and lowering springs (RD) installed by them and warranty issues were never discussed although I've never had an engine or suspension related problem. They still validate other claims.