I added a rear underbelly tray to my car yesterday. The blue area is the new part. It tucks up under my previous partial rear tray and covers a lot of area that was previously a mess. I will get a better photo of it up tomorrow.
Due to camera lens distortion the blue area looks smaller than it really is. I will eventually paint if black once I get it the way I want it.
Tomorrow I am going to make some more underbody trays to clean up some of the smaller areas. I am also going to install some wind deflectors in front of the wheels.
The goal is 50 mpg. Each small tweak should get me closer if I do it properly. I also want to eventually be able to run a 500 mile tank of fuel. My front belly pan project was well worth while and I should have started these additions a lot sooner.
I want my car to look stock so I'm keeping the rear wing. My yarn testing showed that it is actually functional. It provides downforce and a consistent edge for air to cleanly separate from the back of the car. I don't think that it is hurting my mileage much anyway since it is mostly a level surface.
Has anyone come up with a way to blend the seems around 80s style window trim and rain gutters? It is not practical for me to remove them. I will post a photo of the top of my A-pillar where it needs to be cleaned up. If you have any ideas let me know.