Got to take the car out yesterday and drive it pretty much the whole day. Did a lot of "spirited" driving...and noticed that as the car warmed up and got driven harder...the sound started going away. Not really went away entirely, just blended in better with the engine noise and exhaust tone...very wierd.

I'm getting a nice sound recording setup here shortely and I WILL record this. I know I'm not going crazy...haha...