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      06-22-2009, 08:00 PM   #254
darkphantom
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Drives: E93 335i
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Quote:
Originally Posted by NiVeDh View Post
Just did this. Couldn't tell the difference at first but there's a significant increase in loudness, especially when cruising on the highway in 6th gear.
when you first start the car, you should definitely be able to hear an audible difference...also cruising below 3k should be audible a nice low grumble
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