I am just beginning to experiment with HHO; reading through this forum I noticed everyone is talking about how many Litres Per Minute (LPM) their generators will make. This brings two questions to mind:

1- How many LPM are needed to begin to see a fuel savings in a four cylinder engine that runs at a constant 1800 RPM?

2- How many LPM will be needed to eliminate the need for any petrol in the same engine? The engine currently burns gas at a rate of 4.16 litres per hour (1.1 gallons per hour).