I recently changed out my GReddy EVO rear section for a Cattman, but I'm still using my GReddy Bpipe. There's been this rattling noise coming from the Bpipe area. I looked underneath and it seems the Bpipe is up really close to the side heat shield. It sometimes makes a vibrating noise on start up and under acceleration. Not all the time though.
Weird, this never happened when I had my GReddy on.

Any ideas on how to remedy this problem?

-Jason