Well, I bought this cherry 79 with all of 48k miles on it a few months ago. I wasn't impressed with the 16.5 mpg city, and 19.8 mpg highway I was getting, so I tinkered with the air flow meter potentiometer. I'm getting 17.5 in the city now, and a whopping 25 mpg on the highway! Now that's what I'm talking about. And it's still running just a hair rich!