[Tim]

Sorry I didnt mean to be too technical. The heatshield is basically underneath the car on the middle catalytic convertor that can come loose over time. The engine vibration caused it to rattle. The Euro resonator is expensive at $200, I'm not sure how much the OEM one is.

The squeaking and scraping sound I'm not sure. I'm not really mechanically inclined, but I had a scraping noise around turns that went away the next day.