Need some help. I've had a donaldson muffler on an 06 that I had. My 11 drones very bad at about 2100 rpm. I need to did.d out what will take away the drone and be quiet in the cab, and still sound good? I've heard a resonator would be better. Need a 4 inch, and any part numbers. Thanks guys!

 

I have 5'' flo pro TBE with muffler and it droned pretty bad at certain rpm after I installed my sb 66 turbo, I installed the FTE 30'' resonator and it took the drone out and still sounds great.http://www.ftediesel.com/store/pc/vi...p?idCategory=7

 

I have a flo pro muffler that replaced my dpf/cat. I guess ill install the resonator right after the muffler? The muffler is pretty straight through.

 

FTE Diesel told me closer to the motor the better the resonator works, I put mine right after the downpipe.