I've decided that I will replace my exhaust, turbo back, without the Cat, NOx, and DPF. 4" SS with muffler, I'm not looking to rattle the neighbor's windows as I drive by. I'm leaning towards the RaceMe Ultra, I like the idea of being able to change power setting on the fly, but have not committed to it yet. I'm currently using Edge JwA CTS2, which will be for sale when I finish the delete.