This is a repost from another thread for the benefit of the new readers who may have not read:
The Khaos is characterized as an airbleed device...and is similar to the many gadgets that were made by American companies but fortunate for them, they have the EPA (Environmental Protection Agency) and the FTC (Federal Trade Commision) who have tested and studied many gadgets characterized under the air-bleed category gadget.
The results: Airbleed device offers no significant fuel savings!