What Mods have you tried to get improvements in Efficiency and/or Performance? Feel free to post your mods and results here. Make sure to include links to any products you used.
This caught my eye and got me thinking that the carbon brakes could be applied to the Fusion for weight, braking distance, and fuel savings. Anybody else try carbon rotors on their Energi? They saved almost 80 lbs in rotational weight over the stock Tesla.
http://www.cnet.com/videos/link/M8bunBpeWnME5d7o2uSEBkbSBdyHWSkz/