I was just wondering if anyone has ever tried a side branch resonator on any of their cars to reduce cabin drone. I currently have a megan racing muffler on my car and I love the sound of it but get some drone in the cabin between 2-2.5 rpms.

 

That's a common issue, why I had my Megan Racing M-RS muffler. You can try to have a shop install a J-pipe.

 

What size j-pipe would be ideal??? And does where it is installed on the exhaust matter??

 

Or would a inline resonator in place of the rear cats work?