If you put on a downpipe its what Cobb recognizes as a stage 2 setup. If you got to their site, and look at the maps, it has map notes, tells you what you should have for each stage or setup.
cobb . wrx accessport . map listing If you look at these it tells you what you should have and the map should work with it. If you got anymore questions, ask away. Thats what we are here for.