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      02-24-2013, 10:37 AM   #9
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jmh's Avatar

Drives: F10 M5/F32 435xi
Join Date: Mar 2006
Location: Under a rock in NH

iTrader: (4)

As others have said it really comes down to personal preference .
I am very happy with the Akra and like it's more subtle sound profile as it doesn't draw as much attention when driving in the city.
It seems the other option is the Eisenman or Supersprint which are louder and more "aggresive" but both are great exhausts. I had an Eisenman on my X5 and loved it.
All of them preserve the OEM look (to a large extend) and with the Eisenman/Supersprint you could also powdercoat the tips black be even more subtle .

Not sure if it's of any use but here is a short video of idle after startup with the Akra
13 F10 M5 Individual / Brilliant White / Extended/Full Cohiba Brown (Exec/Driver/B&O/20") / A few Euro add-ons / Stealth K40 / Upgraded B&O / ///M Performance Carbon Interior Trim / Color matched side and front grills (lightly tinted LEDs) / Akrapovic Evolution Exhaust / Hartge Springs / HRE S107