The Walker Quiet flo are good. Free flowing very strong idle sounds. When you get on it is like factory level with bonus performance. Have alot of idle character. They get the old man seal of approval. True dual 2 1/4 s with no fancy H crossover is all.
The Dynomax super turbos are a bit loud at times. Although claiming a very sound conscious muffler, they are loud and flow expectedly well. Say , louder the faster.