Either I drive much easier than several of you or I am just lucky. I've gotten 19.7mpg and 20.1mpg around town on my last two fill ups. I should say though that the 20.1 was after a gibson exhaust and K&N drop in filter while the 19.7 was completely stock. My last HWY trip in stock form was 22.7mpg and I did not exceed 65mph for the whole 220 mile trip.
On another note I just installed a condensator today so wait about a week or two and I will let yall know if it actually works for improving fuel mileage. When I installed I called condensator sales directly and spoke with the owner/operator who walked me through the installation. It was very simple and only took about 30 minutes with basic hand tools.
Even if it does not work it does have a 90 day money back gaurentee so I figure nothing ventured nothing gained.