Slim,
I was getting in the neighborhood of 14-15mpg city or hwy, after new fuel filter, valve adjustment, etc, etc. I had gotten 20mpg city with this truck before, and got the pump redone after going through all the other less costly options. Plus, it was taking longer to get started (2-3sec cranking), had some blue idle smoke, smoked when I went up a hill, etc. It would still get up and go, just not quite like it should. Got it back from the shop, and didnt realize just how bad it had been. New pump also quieted it some, esp idle.
-DP