I think I just messed my pants. That sounds awesome.
Guamie - yes, you can get a fix-it ticket in CA for being too loud and/or a points ticket if you're showing off, but unless you're burning rubber or hauling azz or driving like an idiot you will generally be left alone. Also depends on where you are at what time and though I hate to admit it, how old you look.
I've always had aftermarket pipes on my motorcycles and performance cars and I've never been written up for it (even the time I blew by two nice cops at full throttle 2nd gear 60 mph in a 35 zone in my LOUD Subaru WRX a couple years ago). They pulled me over, but let me go - although they did mention the loud exhaust.