In a dual fuel injected internal combustion engine, the primary injected fuel is gasoline with a secondary fuel injected consisting of Ethanol, Methanol, a combination of Ethanol and Methanol or a mixture of either fuel with water. The method and device claimed is an electronic controller that monitors the flow rate and or effect of the secondary injected fuel though sensory input signals and outputs a control signal to an external device which will reduce the internal combustion engines power output to a safe level in the event that the flow of the secondary fuel injected is not within a predetermined specified range and or the effect of the secondary fuel injected is not within a predetermined range as detected by an automotive inlet air temperature sensor or automotive knock sensor there by preventing damage to the internal combustion engine from detonation or pre-ignition of the primary air fuel charge as a result of reduced quantity of secondary injected fuel. The external control device could reduce timing of the internal combustion engine spark event or reduce boost pressure of a forced induction system or increase fueling of the primary injected fuel upon receiving an output electrical signal from claimed monitoring device. The electronic controller comprises of a housing with external connectors and internal components. One connector is a fluid inlet port located on the housing adapted to receive fluid into the housing. Another is a fluid output port located on the housing adapted to output the fluid from the housing. A third connector is a signal output connector located on the housing adapted to output an electrical signal.