well the old hillman is in miles and no trip meter and the speedo is very wavie eg traveling at 70mph speedo goes 50 90 50 90 ect ect so we have no fuel to miles ratio atm but we are now trying it fit the system to newer cars with good trip meters

but in the hillman we notic a good drop in fuel use and the people that have this setup clam between %25 to % 60 drop in fuel use pending driving style and wat car / motor

and this is in line with wat we think we are getting plz note that my dad is hillman mad and had them since the 1970s so he is intune with the fuel usage and i have all ways had hillmans up to a few years ago when i start to drift away from them and got into dattos