After reading this entire thread: I realize I am relatively a noob when it comes to aeromodding but here are My thoughts and suggestions to get a little more out of your project:
1) Change all lubricating fluids to 100% full synthetic such as Royal Purple or Amsoil (engine, tranny, differential, wheel bearing grease)
2) Extend your boat tail further instead of making it square in the back
3) Flat panels over the wheel openings
4) Air Bag suspension, lower cruise height on flat smoooth highway runs
5) Boat Tail Nose of vehicle
6) Replace Both Door Mirrors with Video Cameras (you're already setup for this)
7) Get Aftermarket Computer Chip - Retuned for better fuel economy (some kits have handle held controller with both economy and performance switch)
8) Add Overdrive Unit or change rear gear ratio.
9) Drive a little slower
I hope to see you break 25mpg soon... If anyone can do it, I believe you can do it after seeing your craftsmanship and work ethic.
Keep it up
Dave
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