Patent ID: 6837233

Claim:
Apparatus for improving the performance of the internal combustion engine of a motor vehicle having fuel injectors, said apparatus comprising in combination: an O 2 sensor for sensing the amount of O 2 in exhaust produced by said internal combustion engine; at least one supplemental sensor for sensing a variable operational factor relating to the operation of said internal combustion engine; a programmed electronic control unit for receiving O 2 sensor signals from said O 2 sensor; and a controller for altering the O 2 sensor signals from said O 2 sensor prior to the O 2 sensor signals being received by said electronic control unit, said at least one supplemental sensor directly operatively associated with said controller and sending supplemental sensor signals to said controller and said controller adjusting said sensor signals and sending the adjusted supplemental sensor signals to said electronic control unit, said electronic control unit in response to receipt thereof of both said altered O 2 sensor signals from said O 2 sensor and of said adjusted supplemental sensor signals producing modified fuel injector control signals controlling operation of said fuel injector.