UPDATE: My roomate got under the passenger side of the car tonight and heard the rattle. He pushed and moved around the heat shields and there was no change in the rattle. He put his hand on the pipe and said when it made the rattle noise that he could feel it in the pipe. I'm not concerned about it now as I know some people have had this noise while the pipes are breaking it.
I had wondered why it took so long for them to start making the noise, but I honestly drive my car very gently the majority of the time so maybe it's taken it a while to get the pipes through their cycles.
Tony, do you recommend a few WOT runs to 60 mph or anything specific to help with this cycle or does it just take mileage and constant heat?
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