Do HHO Hydrogen Carbon Cleaning Machines work? Before & After Video Of Intake & EGR Valve

Hydrogen Intake Engine Carbon Cleaning comparison before and after proof results
selling sites advertise these as "FAP DPF" EGR & Manifold cleaners.
a different brand selling the same machine state this on ebay...
With our new engine carbon cleaner ECC230 we make a preventive treatment of the carbon build up in our car cleaning engine, EGR System, FAP and other parts of the exhaust manifold.