I put in the tube but had to leave it, so it has a pretty long piece down in the pipe. It's much much quieter even without adjusting the length! Later today when I have time to play with it I'll see if it gets any quieter. Thanks for the help, this makes such a huge difference in the noise level! The maggie muffler I got is just 2 pieces, the main part is all one piece, not 3 like the website diagram, and then an insert so it sits on the 1"pipe.