The International Open Source Hydrogen On Demand Builders Network.
These are photos of my original booster design which I built a few years ago. Each set of coils is electrically isolated from one another and held at uniform separations with 1/8" PTFE membranes, and the four sets of coils are connected in series. I made two units and installed them in friend's cars: 1) a 1997 Jeep Cherokee and 2) a 2005 Toyota Sienna. On the Cherokee my friend got 107% improvement in mileage, from 15mpg to 31mpg on the first tank. The second tank was about half that gain, and the third tank gave no improvement - thanks to the ECU. With the Sienna the first tank gave an improvement of 52%, the second about 22%, and the third no improvement. No EFIE or PWM was used, as these were initial trials to see what impact the design would have on mileage. With an EFIE to control the oxygen sensor output, PWM to control the maximum amperage, and hydrogen Volo chip to prevent the ECU from automatically changing the settings, I think the mileage improvement would remain relatively constant. nearly constant.