Does the resonator (big fat fart can) on my Durango serve any real purpose?? Someone please enlighten me about this.

 

I WENT TO A MUFFLER SHOP TO SEE ABOUT PUTTING A FLOWMASTER SET UP ON MINE. AND I WAS TOLD THAT THE REAR MUFFLER JUST HELPS QUIET THE HEMI DOWN BECAUSE WITHOUT THE SECOND MUFFLER IT WOULD BE TO LOUD. MY ADVICE TAKE IT OFF CHANGE THE OTHER MUFFLER TO A AFTERMARKET AND LET IT ROAR.