I just had my installed today... bought about 6 months ago from Burger Tuning "Active Autowerkes"...
i am running a JB4, on map 1...
The drive home was in traffic... So i didn't get a chance to try them out.
but as the comments above have said... not a huge sound difference , but definitely notice the turbo whine more...
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2008 BMW 135i Sedona Red | AT | JB4 | Autowerke DP | AMS FMIC
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