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      10-03-2012, 12:07 PM   #7
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Drives: 2011 E90 M3 Comp Pkg Only
Join Date: Nov 2007
Location: Astral Projecting: ∞ 23.516 -122 02.625 0242.101 ĕv'rē-hwâr'

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Originally Posted by mattm View Post
I received the following this morning, from Dinan:
The weight is virtually identical. Dramatically “cooler” exhaust note and a bit less drone running at highway speeds. No “valves” on our system, improving flow at all throttle settings. One of the best sounding exhausts we have ever produced!

I have no doubt it will sound great, but the fact that it is not a true bolt on system that requires cutting the OEM exhaust might be a deal breaker for many. My Eisenman sport system included a connecting pipe that would bolt right up to the stock mid pipe. When I decided to go back to the OEM exhaust, the swap was a breeze.