View Single Post
      12-09-2012, 11:06 AM   #11
e90-328i
Private First Class
 
e90-328i's Avatar
 
Drives: 2011 328i RWD!
Join Date: Nov 2010
Location: yyz

Posts: 194
iTrader: (0)

Before doing any changes. You may want to find out how the cops do measure if it is too loud or not. As it depends at what area they test it from. Is it right at the exit at muffler? At ear level standing next to it? Where they measure it from can have a big impact on reading. As they are different standards on measuring noise. db(a) is a standard that is common in North America which in short is measured at certain distance at varying degrees on a compass and averaged out.
__________________
2011 328i RWD Sports 6MT PE aFe Magnum stage 2 LUX
e90-328i is offline   Canada
0
Reply With Quote