Fuel control module mapping system, method and apparatus for bi-fuel and dual fuel vehicles

A method for overriding sensory input to an OEM fuel control module in a vehicle such that the fuel control module of the vehicle optimally regulates fuel flow of an alternative fuel to an internal combustion engine, the steps of the method comprising:

• reprogramming a look up table data structure in persistent computer readable memory accessible by the fuel control module (the “ethanol map”) such that the ethanol map comprises values optimized for regulating performance of the internal combustion engine on the alternative fuel, wherein the alternative fuel comprises one of propane, hydrogen, and natural gas;
• wherein the map, before reprogramming, is exclusively referenced by the fuel control module when the vehicle is sensed by the fuel control module to be running on ethanol;
• affixing an aftermarket control unit to one or more of:
• an OBDII port of the bi-fuel vehicle, and a signal bearing medium for carrying an electronic signal from an ethanol sensor measuring fuel in the vehicle's fuel line;
• wherein the fuel control module was originally configured to regulate fuel flow of one or more of gasoline and ethanol;
• manually activating a switching mechanism on the control unit;
• relaying a digital signal via the control unit, in response to activation of the switching mechanism, to the fuel control module falsely indicating one of:
• the presence of ethanol in a fuel line, and that the vehicle is running on ethanol;
• forcing the fuel control module to reference the ethanol map in internal persistent computer readable memory;
• forcing the fuel control module to regulate fuel flow of the alternative fuel to the internal combustion engine in accordance with the reprogrammed ethanol map;
• and
• running the internal combustion engine on the alternative fuel.