After 9 months with the PV the sound has mellowed, but it is still very loud. If you are a music fan, don't get one, because you won't hear your stereo.

I like mine, and I definitly saw power and mileage improvements with it, but I may replace it with something a little bit less noisy.

-Joel
'02 Trooper S
The dog-mobile.

'90 Trooper LS
Dearly departed after 13 years in the family. Donated to WAMU Radio in DC.