Catches all the debris that's supposed to be blown out and destroyed through the exhaust. But due to the Ecoboost engine, not all of this debris is destroyed. So it gets caught and builds up over time. A catch-can will prevent this from happening.
I dont know who Dynamic Appearance is
https://dynamicappearance.com/2022-2024-ford-maverick-form-lighting-led-projector-headlights/?srsltid=AfmBOorU4BQlxERwlyPqDillKfUTJVU3RVV7sRpX7Jbm4-Gr-Q4W64JO