I just got done installing DynoMax's Super Turbo kit on my car, and right after I finished I noticed I had a left over part. It looks like a gasket or flange of sometime, and it's listed as a gasket on the box contents list. There weren't any instructions with the kit so I'm not sure where it was supposed to go. I rechecked all my connections and everything seems to fit okay. The only place I can imagine it goes is inbetween the b pipe and the muffler. It seems to be a tight connection without it though, is there any reason I need it there. If anyone out there has had a similiar kit and knows where it goes, please let me know. Thanks...

 

Tight fit doesn't count when it comes to exhaust systems, the place you mentioned is where that gasket should go, and you should install it to avoid possible exhaust leaks later.