borla/ frpp has 2 different kind one is 49 state and round and the other is 50 state and square shape. Ilive in ca. does anyone else have the 50 state? Are the round one called stingers? do the other ones sound loader then stock? Thanks for your help.
Just going from what I've read (I have CORSAS), I believe the round ones are "Stingers" and yes, they are louder than the square ones. I would imagine the square ones are somewhat louder than stock. If you want the best, look into Corsas.