I have no exhaust. Straight pipes and it's really not that bad. Sound from inside and underneath starting at 5:25 in this video
Only one way to find out!When I installed my exhaust, ran into a snag and ran just like you for 2 days. Thought about just running a straight pipe out. I have often wondered what a straight pipe out of my dual cats, into a real x pipe, and then coming out the sides with no muffler would sound like.