After a lot of research, I finally decided to go with Ark's exhaust. First of all, it sounds amazing. Second, it worked on my 2015 Kia Optima SX Turbo even though it's not listed.

First of all, I think this is the best exhaust you can get for a Kia Optimathe sound is just amazing. Second, even tough it doesn't say it worked for my vehicle, 2015 Kia Optima SX Turbo, it did work. Installation was flawless. Third, definitely better throttle response and smoother power band.

First of all, even though my car is not listed, it definitely worked for my 2015 Kia Optima SX Turbo. Second, I think this is one of the better exhaust you can get for a kia optima; the sound is just amazing. Third, definitely better throttle response.