From March 2009 through mid 2013, I have been successful at using the GreenFuel Booster to increase MPG for my 2006 Honda Civic LX. A highway drive from Richmond, VA to Ellicott City, MD (and vice versa) would regularly get 48 MPG.
The general strategies were:
(1) taper the air intake after the MAF sensor
(2) inject HHO generate from distilled water with KOH electrolyte
(3) use an OBD2 log analyzer
This new 2014 effort will use the following strategies:
(1) taper the air intake after the MAF sensor
(2) inject HHO + HHHN generated from ACE Janitorial Ammonia
(3) water mist injection using ultrasonics
(4) use http://autotalky.com to analyze OBD2 testing data