Bought this muffler for my 17 Ram 1500 Hemi 5.7 Laramie. It's pretty loud for a can start and accelerate. Not too much of a difference from the cabin at warm idle. (Waiting for a red light) Won't wake the neighbor but will notice the approaching V8. Exactly how I want it. I've been wearing them for a few days now, I don't notice the rumble in the cockpit.