Oh, it should be broken in by now.
About 6,500 miles on it, including our 60-120 runs (one of which ended up being a 60-160), and she also stomps on it when passing. It's not quiet by any means. When following her in her Hellraisin 1.0, it sure sounded loud and nice, even though I was some 200 feet behind.
But she can hear mine starting up in the garage when she's in the barn, a quarter mile away. It's just louder.