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      04-24-2012, 06:56 PM   #34
Devious21
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Drives: 2006 Z4M
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Quote:
Originally Posted by Finnegan View Post
RPI is louder. In the Webster Tube (tunnel) with e for effort behind me all I could hear was the RPI. Remember, the dB scale is logarithmic. While the RPI is only a few dB higher in the tests (93 vs. 91 in standing test, 95 vs. 90 in WOT drive by) IRL it's a lot louder.

How important is drone to you? RPI has more drone than the Diablo, but both have a considerable amount of drone.
Which exhausts are known for being drone free or at least very easy on the drone?
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