I have been using Ecomodder techniques since I started driving. I was fuel conscious and coasted whenever I could when I drove my Datsun B 110 back in 77. Driving frugally did not have a name back then. I was broke on my ass and needed to conserve.
Just this last Thursday I installed a Scan Gauge E in my 07 Saturn Vue AWD (3.5 liter Honda V6 with 5 speed auto). I am on my first tank and am calibrating the unit. The information the tool provides is outstanding. Prior to the gauge I was averaging 23 mpg. This vehicle was purchased in the last month. I checked the air pressure and had 2 tires at 20 psi. After all tires were inflated to 40 psi I checked the mpg. It jumped from 23.3 to 29.4. I employed proper fuel saving driving practices at the start of that tank. That is a 30% increase in mpg. SWEET. I may pull the roof rack off. I am not sure if I will employ P&G. The Scan Gauge has greatly modified my driving. The Vue seems to be most efficient at 58 mph at 1500 RPM, going down hill, with a tail wind, in neutral, and drafting as semi.
We are in the middle of a road trip and are averaging 31.5 mpg. That is 20% above industry ratings for this compact SUV with AWD.
You are a great source of information. I thoroughly enjoy the Ecomodding community. I am also a Prepper and a Last Dropper. The philosophy of using resources efficiently is central to survival.
Quiet Prepper