I just put a GruppeM intake on my Z4M Coupe and reading the Classes, it looks that that would put me in the Tuner Class, is that right? It shouldn't be because the intake doesn't give me any real performance increase, just better sound.
If the intake puts me in the tuner class then I'll remove it for the autocross because I know everyone else in the tuner class is running on good tires, catbacks, tuned ECUs, and with me on stock, I wouldn't stand a chance.
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