The hissing noise when letting off the throttle is quite entertaining, but sometimes reminds me of a person with nasal issues when talking :-)
The exhaust sound is intimidating especially with SRM active. Yesterday some "ricer" kept chasing my tail and revving at me as I was exiting. Freeway traffic was quite congested due to construction, so I found myself down shifting and hard braking quite a bit. So I guess someone got fidgety and kept tail gating while revving at me.
__________________
|