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      11-17-2012, 10:51 AM   #20
S65NAPWR
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Drives: M3
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Quote:
Originally Posted by alofoque View Post
ACM exhaust has 0 drone. I'm running AA race xpipe(Full Catless) and its still has VERY little drone inside the car. Basically ACM's method is like an eissenmann race and the perforated pipe method is the sport.
+1

Both sound good in their own way. Neither have an annoying drone. Question is whether you want a more aggressive sound or not.
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