Your engine will actually run smoother and have cleaner emissions.
This is because when HHO (oxyhydrogen) gas is added to the combustion process, more of the energy in the gasoline is used, and the byproduct is steam which is converted into water after exiting as "exhaust." The end result is that you are protecting the environment with safer emissions as well as keeping your engine much cleaner.
We have some people who have reported that after going for an oil change their mechanic was amazed that their car oil was so clean as a result of using this system.
Ryan
Run Auto With Water Mechanical Support
http://www.runautowithwater.com