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No, la, i have my Gruppe M intake when i have my first service, and they didn't say anything about it, i'm mean, the only thing I'm changing is the exhaust/intake and they are exactly OEM fitting, and i'm not going to change the CPU or anything big on my M3, so i think they won't say anything, but i'm pretty sure if you use software upgrade, that's a different story. Any up date on the Performance Wheel???
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