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Sometimes the diagnostic system brings up a message saying the car has been chipped and warranty is invalid on various group numbers, mainly being engine/gearbox/suspension, but in my experience which is only with a "chipped" diesel it is a glitch and as long as there is no obvious signs of an aftermarket device the repair work should be carried out. Ask them to send a PUMA case about it if they refuse
Mike
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2006 E90 325i M Sport Manual, BMW performance kidney grills, BMW performance air filter, plenty more to come
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