You've got a lot of factors working against you Robertsvx, the fact you are getting 55mpg is impressive. How long have you been driving it? More than just those 3 tanks right? Look at any of our mpg charts and it took a long time to crank out the big mpgs, mine actually improved quite a bit as I learned to DWL. Don't just keep the vac. over 6", hold it at a constant spot (9, 8, whatever it takes to hold your preferred -average- speed). Yeah you'll slow down on the hills but if you speed up going down the other side it all evens out. My DX w/VX motor is lowered 2", has a 3/4 grill block, no mudflaps, .030 shaved head, VX 13s, vac gauge and MPGuino, and my best ever is 63.8mpg, so you are doing great for no mods. My tires are at 48psi (shhh
) and its pretty flat around here, mostly 60mph commute. I noticed a small boost running a block heater on a timer back in the spring, although I haven't used it since it got warm out. Speeding hurts mpg, and you won't really get there faster if you are in city/traffic lights anyways. Timing the green lights will help (watch the X-walk flashers for side road, or when the side road traffic stops). As others have said coast in gear with no gas pedal as much as possible. Where you can try to do a lazy "pulse & glide", get up to say 50 or so and DFCO down to 45, then accelerate at around 6" vac til you are back up, coast down again. That last few mpg's you want is going to take an MPGuino and some patience. Good luck
