Renault Megane III 1.4TCe recall

Hello, I drove a Megane Grandtour Z 1.4TCe until November 2015. I now switched to Hyundai i30 Diesel On Monday the car dealership, where I had bought the Meggi, called me and asked if I still had the car. I told you that I had sold the car to Holland. It was about a technical recall action by Renault (no KBA action). When I heard of a search at Renault, in the course of exhaust manipulatins, my curiosity was aroused. Maybe yes, I know someone more specific about the subject? Does the recall have anything to do with it? I am grateful for all the information Gruss Frank