Get a
Scangauge or similar monitor. It will give you
instant mpg feedback as you drive. The factory mpg gauge is OK...but it only updates every 30 seconds(?). A Scangauge also has other features that make it worth the money (like monitoring important things like engine temperature). Anyway...having instant feedback will help you learn which way to drive your car to extract the most fuel economy from it.
Here's my Scangauge where you can see that I'm rolling along at 60mph while getting 71.1 mpg at that moment
A lot depends on
where you drive. If you are running a delivery job out of your car and do a lot of stop and go city driving, you will have a very difficult time getting to 50 mpg.
The side benefit of driving like this is that your clutch and brakes will last forever. :)
Oh yeah...one other basic thing is to keep your tires inflated and make sure your car is aligned properly. I don't know how much pressure you can safely run in Enasaves...but it's more than 32psi. Low rolling resistance tires DO make a difference.