This is a custom replacement vent for mounting a 52mm boost gauge into. It fits on a Subaru WRX and prints without support. It should fit on 2008-20014 Surbaru WRX's. The specific year WRX I made this for was a 2013.
There are some extreme overhangs that you may need to turn on supports for. I just turned up my cooling fan to ensure everything stayed crisp and it worked well with no supports.
I had quite a few stringers I had to cut away. make sure you have your print temp and retraction set to avoid this. There are a lot of retractions and tool head moves across the main gauge bore.