Mine has a good deeper tone and pops during deceleration. It's loud when on the throttle. If you want it really loud, test pipes and headers will do it for you. I'm not a huge fan of how headers sound on this car though.
I bought the cheapest test pipes I could find because I heard they are all the same (its just a small pipe). I got dep racing test pipes for like $130. I got the solo exhaust catback for around $900. The Ark ones are pretty expensive($1600). The cheapest one are the CNT which are like $400 but those have fitment issues and need to be modified to install. There's a lot of different brands as well like Borla, ISR, Magnaflow, Injen.
I love my setup! It randomly pops a lot and I love it. I'm not a fan of the Korean popcorn where it constantly pops. This is a more natural pop sound vs a programmed pop sound. I ran into a few issues with installation due to the bolts but fitment turned out great.