Ok, I have a problem with the exhaust on this rig.  Seems on the pipe
that connects the "headers" to the Catalytic converter (called "Exhaust
Connecting Pipe Header Pipes to Converter"  on the busboys site) there
is a "screw on cap" that has managed to unscrew itself.  Aside from
creating more noise is this a problem (seems to idle in a cyclic maner
now and I wonder if there is a relation.  Also, can I purchase this
"cap" anyplace, the online venders do not list it as a part, but show it
on the diagrams.  Perhaps the real question, why in the world is there a
screw on cap on one of my exhaust pipes?

Thanks in advance for you help!

Philip