Quote:
Originally Posted by shakib
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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I am surprised that exhaust systems don't seal completely when installed. Seems like we would be past the "just wait until the soot fills microscopic leaks then it will be great".