I ordered one as well. Installation was a breeze. The orange hanger doesn't really work. I just used the old ones. And one of my bolt was jacked.
As for start up. Wow! Deep grumble.
At 3k rpm and above get loud! Deep grumble when rev matching. Fitment was spot on. I made a video which I mounted the GoPro just above the exhaust and another shot on the inside rear glass.
https://youtu.be/BZkow0yAh4E
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