[naturalextraction]

greasmonkey, I don't use ultra sound either. Bosh has some patents back from the late 80's and one in 90? that uses ultra sound in an injector, was not much more effective than high pressure injection for the cost. I do not know what "electrosonic X" is. I can guess, but I don't like to guess much! But what comes to mind is what was researched related to pulse wave, ultrasound wave forms or a nonlinear mechanism of penetration of a trans wave electro magnetic field with negative dielectric constants. Density change reduces clarity of output and consistency via heat + Volume = pressure >constant. This particularly in unstable hydrocarbon materials such as fuels we have today. It's all about disassociation of molecules in a constant precise measurable amount. Usually utilizing Avogadro's # 6.0221415 x10 23pwr considered in measuring "mole count" of an ideal gas on that level. This really does relate to what we try to run our cars on and extracting maximum usable or transference/conversion of btu, internal chemical energy. pgfpro and others have noted gains or losses via temperature usually environmental and ambient and throughout the transference of both air and fuel related to many inconsistencies related. Thus why so many sensors for the ecu to try and control on the fly. You could add many more sensors in different areas with a more advanced ECU and have better control thus optimizing efficiency, by today's standards not really worth it to the already struggling automotive companies. The gains arn't going to be worth it. They make their incremental improvements especially European companies hence why they've kicked the general American car companies down the toilet. But that would be my opinion. BMW, for one, has some amazing operating and control systems now.
BTW, think about ALL the energy going into the system vs net energy out, it can through a wrench into it all.