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Hey guys new to the forums just got a 2015 m6 coupe competition package and i want to have the option of opening the valves. My car is a lease and i don't want to do anything to possibly affect my warranty and i was wondering if the exhaust meister would be noticeable when i take my car in for service? (Codes etc) If the device has any other affect on the car besides making it louder. Mainly I'm asking if there is a reason BMW puts the valves on the car or if the only reason is to make it quieter. I don't want to do something that can adversely affect the car and in turn void my warranty but i do want to get some more sound from my exhausts. Also does anyone know if its compatible with the 2015 comp package exhaust system? Thanks so much to everyone and i look forward to speaking with you guys more!
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