Marcos_65
+1y
I had this same issue on my truck, I am running a single 3" exhaust hi flow magnaflow cat and muffler, I had the worst drone on earth because I had a turn down before the axle under the truck.
I added some more 3 inch pipe over the frame and exits in front of the rear tire now, much better, drone is gone, and now sounds cleaner when taking off.