What's the purpose of the solid rubber on the stock muffler?
For those who pulled out their stock muffler before, I am sure you've notice the cylinder-shaped brown color rubber about 2 inches in diameter, and 3 inches long.
It is attached to the rear end of the muffler. Does anyone know the purpose of that? I am thinking if I can take it off and attach it to my new Flowmaster force ii to tone it down a little bit.
2014 Mustang V6 3.7L 6-spd manual, with MGW shifter, Airaid CAI, BBK shorty headers, Corsa Sport axle back, strut tower brace, JLT oil separator, GT500 differential cover, BG Synchro Shift II gear oil, Redline differential oil.