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      08-01-2012, 02:13 PM   #6
SCHMOUPE
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Drives: 2007 Z4M Coupe
Join Date: Apr 2010
Location: NJ

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2007 Z4M Coupe  [0.00]
Quote:
Originally Posted by David70 View Post
He bought them used with about 3000 km on them, why would another 100km make any difference?
breaking in new plumbing is not about breaking in the hardware itself, it is about building up carbon deposits around all the seals. Once that happens and the microscopic leaks are covered, the system mellows. I can take my 2 year old Rogue exhaust off my car, wipe off the connection pieces and put it back together and it sounds like an RPI the first 20 minutes and as I drive day after day, it gets quiter until it reaches Rogue levels again.
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