Track Your Mileage in Real Time
Being aware of what your ingestion appears like from tank-to-tank is important, but that's really not enough.  Knowing what mileage you are getting in real time--having the ability to compare it with yesterday, everything you got or even 10 minutes ago--is your way to drive. Ecomodding unites the love of saving money and adding gadgets, go to 
detailing pro shop.  People with cars have it simple: All you have to do is throw some cash at a fuel-economy computer such as the Scangauge, and you're instantly instrumented.  For older cars, explore the world of DIY fuel-economy electronics, or you might have to get your knuckles cluttered by installing a vacuum gauge, which measures how hard the engine is working, like the arduino-based MPGuino.  A conscious mind combined with instant feedback, either way should get you that minute 10 percent. 
