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      08-25-2013, 09:58 AM   #6
Asbjorn
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Drives: Z4 N54 DCT (VTT GC lites)
Join Date: Mar 2012
Location: European in China

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Congratz!

What are the differences in perceived exhaust sound (volume and quality)? The 1M has a quad exhaust with less restrictive cats etc, but of course only the windows come down. What does it sum up to compared to the Z4 with the entire roof down?
Appreciate 0