Excel Exhaust System: Your Source for Kia Soul Catalytic Converters When it comes to maintaining your vehicle's performance and environmental friendliness, few components are as crucial as the catalytic converter. This device, nestled within your exhaust system, plays a pivotal role in reducing harmful emissions before they exit your vehicle's tailpipe. If you're experiencing issues with your 2016 Kia Soul's catalytic converter, it's essential to address them promptly to ensure both your car's efficiency and compliance with environmental regulations.