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yab14 · 08-20-2014, 08:44 PM

is that a myth and if not how long do they take to break in? and what is actually happening with them

08-20-2014, 08:44 PM	#1
yab14 Drives: camaro 14 1LTrs Join Date: Jul 2014 Location: Wappingers falls Posts: 37	break in period for mufflers is that a myth and if not how long do they take to break in? and what is actually happening with them