Before you start trying to bead the media out with a pipe & hammer, go to the hardware store, & buy a cheap wood borer. Get one of the cheap, 1" paddle type with a long shank for about $8. 00. You can drill through it from both directions & from every angle, and get most of it out that way. It drills out very easily, but you'll beat on it all day if that's your method of removal. The rest does have to be pounded out with a bar or pipe, because it's cemented to the housing all the way around. This is the hardest part to completely remove. I thought mine was plugged too after about 125k, but I don't think it actually was. It doesn't run any better after being nuetered, and it's a little noisier at idle now, you can hear a little turbo whistle at the tailpipe that wasn't there before.