Improving 2008 Focus Sedan Aerodynamics
I regularly travel 120 miles every other week averaging 65 mph. I am looking at different ways to improve mpg. I currently run around 34mpg at 85mph and 36mpg at 75mph. I am planning to get a fswerks CAI for a bit of a boost, but have started to consider some kind of aero kit. I decided to try drafting on my trip today and found that I could get 38mpg as I was following a HD3500 at 80mph. This led me to ask, what kind of drag do these cars have stock and what can I do to help reduce the amount of drag at high speeds? Are there any beneficial aftermarket kits or will I have to do custom fab? I tried to find a previous thread for this and could not so I decided to start one. If anybody can impart some wisdom or point me in the right direction any help will be appreciated.
Oh yah, specs
Stock 2008 Ford Focus SES Sedan
2.0 Duratec w/ AR103 Plugs
Stock Wing (Does it actually do anything?)