I took the time to put on a lawn edging air dam on the 2005 Toyota Tacoma. My standard run before installation gave me 22.2 mpg by ScanGageII. My standard run after installation gave me 22.8 mpg by ScanGageII. I call this a wash or a learning experience. I still have to seal the gap between the lawn edging and the bumper. I would have liked to have a 9" lawn edging, but not available in this area.
Also attached is the lower grill block on the Accord. I don't go for style because all the stores had was white corroplast and that blue tape.
Joggernot