Quote:
Originally Posted by roundel335
"Turbos are louder"? Last time I checked, my 2013 335i had one turbo and it makes no exhaust noise; without modifying the intake, there'd be no increased intake noise either. Also, how did you get two mufflers on a single-muffler exhaust system? I'd venture you didn't install any of these things (except maybe the JB4) yourself. Your next visit to the dealer for service should be quite interesting.
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Turbos are louder as in you can hear the whistle/whine more. The mufflers are easily accomplished at any competent muffler shop and there won't be issues at the dealer as long as you set the JB4 to map 0.