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Originally Posted by M6-Coupe
I may consider if it does not void warranty since here in California all BMW dealers are so sensitive about this kind of tuning and I doubt BMW NA accept this tuning. I also want to see the difference. I'm not gonna go to racetrack weekly basis or so, but I really love fast acceleration. I'll wait to see your experience at acceleration with BMS tune.
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A dealer here in FL told me such a tune would void the warranty. However, the piggyback tune is easily removed. The control box can be disconnected from the harness in seconds, or the entire harness with control box can be removed in minutes. Then you can just use a laptop and coding cable to clear the fault codes, if any, and take it to your dealer for service. Once service is done, reinstall the tune and you're good.