I'm getting around 15-16mpg city, 22 hwy right now. I've heard other guys in the VE section say they're getting near-DE mpg numbers. I don't know what the deal is. I wasn't getting good mileage when I still had my DE (19-20 city, 24 hwy), so I'm thinking it could be something to do with the transmission(?). I'm using the same O2 sensor that was in my DE, but the previous owner had just changed it out months before he sold it to me (in August). Any suggestions?