I'm a bit freaked out, i posted this on yz450 forum, but was hoping to get a bit of input from people. So i took my silencer off and repacked it tonight. When i took the silencer off, i noticed this long....spiral, metal thing coming out of the header and sticking outta the end where it ties into silencer pipe. Its spiral, its metal. i tried lightly yanking on it, and it didn't come out. The previous owner had cut down the silencer by at least 3 inches from what i can tell. I have absolutely no idea what this is, anyone, help me out here??