I have had my PV installed for several thousand miles now and this is my insight on it.

When the engine is cool the PV is loud and "raspy"

When the engine has reached operating temps the PV sounds mean and has a nice growl to it. Sort of like a V6 mustang.

I suspect that most folks with the PV installed, have retained the stock exhaust tip. I feel the tone can be changed with the right tip

LETS GO RED SOX!!!!!