I posted once in the introductions. Since then I've done a bit to my 2001 Focus wagon. I added a front air dam, stuck on Airtabs, and a small grill block.
Not sure about the effect on mileage yet. I only have one and a half tanks since the air dam went on. Here's a picture of the front air dam before I put on the grill block. I attached it to the bumper cover using epoxy.
The air dam and grill block are made from plastic lawn edging. The grill block is held in place by the Ford badge. I put the grill block on today, we'll see how long it stays stuck.
The most questionable mod for mileage improvement (IMHO) are the AirTabs. They are easy to install though.
