I just took a drive to see what the initial calibration was like. The trip odometer on the del sol says 6.0 miles. The SuperMid says 9.70 km or 6.01 miles. I expected it to be close because I am using the same size tires as a Prius. After the 6 mile trip the display showed 0.376 liters used, or 25.79 km/l, or 60.6 MPG. Hmmm the calibration seems a little off there, but not too much. The Del Sol uses 240cc injectors. Yoshi says his Prius calibration number shows 222cc. So there is probably an under registration of 10% which would bring me back down to 54 MPG. Sounds about right because I started on a warm engine. I'm gonna drive to work and back to get a better calibration on the odometer and see what the trip FE is. I will adjust the calibration down to make the trip 51MPG which is what I average. Then I will fill up the tank for a full tank calibration. So far so good with the BETA testing. I was even able to verify that the injectors shut off completely under colsed throttle. The PW shows 0.0. I have it hooked up so that I can shut off the engine and restart by either bump start or starter and the SuperMID keeps on recording distance. I found a convienient place to mount it. I didn't really need a case. you can't see it from the outside of the car because it is hidden by the safety and emmission stickers. Another interesting point is the % time the engine is running and FE while the engine is running(shown as 76% and 19.46 km/l). During the 6 mile test run, the injectors were only active for 76% of the trip time, either because the engine was off completely or the injectors were cutoff during closed throttle engine braking. Whil the engine is running, my FE is shown as 19.46 km/L or 46 MPG. Now some of the off time was due to stopping at a convinience store for a few minutes to pick up some stuff. Also I had the supermid runnning for several minutes during installation so the 27 minute and 21km/h ave speed are not truly indicative of the trip. More to come.