Thanks guys!
I got a chance to get under the car today. Took off the thin sheet metal shield and the bolts on the thicker black shield that holds the X-Pipe to the chassis were loose. Guess they came loose from vibrations or I didn't fully tighten them. Don't know. Put some lock tight on them and put it back together. Haven't taken it for a test drive yet but it sounded normal when I started it. Hopefully that was the issue ... if not will update the thread.
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08 M Coupe • Ceramic Black Fabspeed Headers • MCS 1WNR • Poly FCAB • Stoptech BBK • Vibra-Tech • Epic Tune • Apex EC7 • RPI Scoop • Eventuri • Stromung • Rogue X Pipe • Varis Diffuser • CF E92 GTS Wing • CF Roof
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