- Aug 31, 2022
- 42
- 32
So I decided to give the ZR2 a Flowmaster muffler and delete the resonators and it sounds great on start up and when I get on the gas, but there is a very annoying drone at freeway speeds. When I am moderately accelerating up to 65-75 it sounds pretty quiet but once at cruising speed (normally about 75 for me) it sounds like it shifts and gets really loud. Could this be the DFM, should I just put my resonators back in?