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      03-29-2013, 12:42 PM   #6
intoflatlines
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Drives: Z4MR, E34, E30
Join Date: Mar 2013
Location: Chicago

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Thanks. The reason I asked is because the stock motor sounds so amazing... not sure if it's the variable valve timing, ITBs, or whatever, but it sounds so beastly and powerful from inside the cabin that I was wondering if it was some sort of fake sound being piped in like in some other modern cars. Good to know that the sound I was hearing was pure M power
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