ScanGauge

Our plans were always to fix this car up for short trips.  We wanted to be able to get away for a few days without towing the house (i.e., our 5th wheel).  But before we got going with those mods, we wanted to max out our gas mileage.  The ScanGauge is a neat device that plugs into the OB-II port and gives you access to a wealth of information from the car's computer.

The main thing I wanted it for was the instantaneous gas mileage and the promise of improved fuel economy by learning to improve your driving habits.  That promise was kept.  I was getting about 25 mpg combined before getting the ScanGauge and, just two weeks later, I was getting 35.  Since then, I've seen even better results.  On one 70 mile trip in Yellowstone, we got just over 50 mpg.  The device cost about $85 and it paid for itself in about four months (two months earlier than I thought it would).