For sale: Cat-back Sierra or Silverado 2019 and up Corsa electronic copy Dabba FDR custom Max Power The last connection after the dabba and the exit is from an original cat-back exhaust and the nickel outlets are clean. The sound is very quiet and it gives a light and cool popcorn sound. It has not been programmed, thrown, or cut. My use of it is very light and it has no leaks. For sale to the highest bidder.