I recently started my planned eco mods for my '09 Toyota Yaris thanks to the inspiration from this website.
Here are a couple of "before" pictures taken shortly after I bought the car:
In the past week I added:
- Coroplast upper grille block
- Coroplast fog light covers
- Pizza pan wheel covers
A few "after" pictures:
All pieces were painted semi-gloss black (engine enamel). The upper grille block is secured with zip ties. The fog light covers are secured with silicone.
To attach the pizza pans, I drilled and tapped the steel wheels and secured the pizza pans with 6mm x 1.0 thread bolt, lock washer, and fender washer. Since there was a little space between the pizza pan and the part of the wheel that I drilled, I simply super glued a nut on the back side of the pan at each hole.
The pizza pans are very secure, and I have no worries of them coming off. The only issue I've had so far is one of them making a noise where the edge of the pan meets the wheel. I'll probably get some rubber vacuum hose, slice it open, and glue it around the edge of each pan.
In addition to these mods, I also changed my oil to synthetic, cleaned the air filter (previous owner installed a K&N), and installed a lightweight crank pulley.
I have not done any ABA testing on any of these mods, but the last 2 days (70 miles each day), I have been getting 5 mpg more than what I was getting before the mods. Before mods = 39 mpg average. After mods = 44 mpg average. Take these numbers with a grain of salt, because I have not done any testing. It is just based on my ScanGauge readings for a couple of days of driving.
Future mods that I hope to be adding during the next few weeks (or months):
- Wiper wind deflector
- Belly pan and/or front air dam with side skirts
- Rear wheel skirts
- Passenger mirror delete (will use convex or wide rear view mirror and possibly blind spot mirror on inside of door)
- Wheel wind deflectors (maybe)
p.s. This vehicle is used for pizza delivery 90% of miles driven (usually).