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      05-18-2011, 12:56 AM   #24
HP Autosport
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United_States
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Drives: F80 M3
Join Date: Mar 2007
Location: Santa Barbara, AP, Brembo, GIAC, Koni, Ohlins, Performance Friction, www.hpautosport.com

iTrader: (36)

Compare to our project 135i with DP and full Berk Tech. exhaust the 1M is very quiet.

There isn't really any drone to speak of, at least to me. Some people are more sensitive to these kind of things.

We will be testing a mid pipe with resonators later this week or early next.
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