[Michael C Henry]

The Car Chemistry encerts come with a smaller pipe in the center of the disc. They come with several (what would call ) soft plugs that you can cover the center pipe with and play with the size of the hole in that plug. I welded a nut to that disc and made a provision on the outside of the collectors(a heavey washer) so I could bolt the disc in from outside. As I said the connections collector to muffler and muffler to turnout elbow are SS V clamps. When I started the WA DMV code said I couldn't do anything to aplify the noise.= no standard so I thought that sooner or later some one will complain and once welded and ceramic coated it would be really involved to do anything later. Usually you have to show that you have made an effort to reduce the noise