View Single Post
      08-20-2012, 08:41 PM   #39
johanness
Banned
56
Rep
1,739
Posts

Drives: 2008 Z4MC
Join Date: Aug 2010
Location: Seattle, Vancouver

iTrader: (3)

Garage List
X-pipe adds 5% volume, and that's about it. Maybe a bit deeper, but negligible. You purchase it for its flow characteristics more than for sound.
Appreciate 0