I have a 2000 as well,I just put the copper cap back in mine. It was moosing so loud,it turned heads. I noticed a significant loss in mid range power,and it does not pull as hard through the RPM's.I also notice the pronounced drop in RPM's when you let off the gas under acceleration.(which I guess is what it is supposed to do.)I take mine out during warmer weather,but it started hitting the low 40's here in Ohio,and that's when my moose comes out of hibernation. You just have to live with the noise or the lack of power!
Rod
