Review on 🚗 Flowmaster 842543 2.5 Inch Inlet/Outlet Delta 40 409s Performance Muffler by Oren Perry

I bought these to replace the Flowmaster 40 Thunder Road mufflers I had because of the rumble in the car. This is a Deltaflow, which is supposed to be quieter in the car. They are worse than the drone that has just been changed in the speed range. $200 for mufflers and $200 to cut out old ones and replace with these. What is too much noise now. Certainly a little misleading advertising. I would appreciate some sort of compensation, I feel like I've been misled