I'm looking for ideas to lessen the noise from my aftermarket exhaust. The situation arises during highway travel, at about 2700 rpm the drone is almost enough to drown out the stereo. Is this a common problem with the 08 sedans? I'm using Perrin mufflers right now do other brands have less of the problem? How much does the foam used for stereo installs help out?
Thanks in advance for your ideas and experiences.