I have the mam midpipe on my 02 es protege. I used the kartboy hangers and it stopped the pipe from moving but part of the cat sat on the crossmember bar. I used washers to space the crossmember from the rest of the car. It helped a little that I was able to get a feeler gauge between the cat and the bar. After that I used zipties. Three zipties on each metal hanger on the midpipe and tied it to a bar thats above the cat, might be the front swaybar, I forget, but if your under the car you will see what I mean. The zipties raised the cat about an inch from the crossmember. As your using the zipties, push up on the midpipe as your tieing them. I have no rattles anymore. Everything is perfect. I hope this helps everyone out. Any questions, feel free to ask and I'll help if I can.