florida is great about emissions. There is no testing required. Shops are not allowed to remove emissions equipment, and you're "not supposed to drive a car on the streets that has modified emissions." But really, no one cares. At most you'll get an exhaust ticket for not having a cat (usually means you got pulled over for having an obnoxious exhaust by a cop who didn't have anything better to do at the moment).
I have no emissions gear left, all sorts of "for offroad use only" stuff, and an RSR exhaust with a resonator welded in where the catilytic converter once was. Have yet to run into trouble with it.
The car runs clean and has a good note to it. Most of the time I just get a smiling thumbs up from cops when I cruise by.