The percentage improvement I reported in this video was an anonymily based on one tankful. In reality the average MPG didn’t change all that much WITH THE CELL PRODUCING GAS AT FULL ATMOSPHERIC PRESSURE.

But, please don’t let this discourage you. Current experiments producing HHO under vacuum are showing incredible promise. Keep watching and see. This is really getting good now.

Previous text,
==============
First mileage test results are in. 20% increase with no other mods!!! When test started three weeks ago, current @13.8v was ~15A. When measured today it was 6.4A, meaning the electrolyte concentration was depleated over time. Added exactly 2 grams NaOH to restore 15A @ 13.8V.