These map sensor enhancer units will not work in conjunction with oxygen sensors. These units are specifically designed to alter the MAP or MAF direct current signal before reaching the ECU (on board computer). These units are designed to lower your fuel consumption so that you may introduce more alternative fuel.
Without this device you are just adding HHO to your existing fuel intake and not saving any fuel at all. Oxygen sensor enhancers work, but in a different way. oxygen sensor enhancers are introduced between each o2 sensor wire and the ECU thus adding millivolts to the signal to trick the computer into believing your vehicle is running rich and should lean the fuel air ratio. This is great except these units are more expensive and are difficult to install. You will also need one for each upstream oxygen sensor. Usually (2).
MAP sensor enhancers give the driver real time control over the fuel air mixture allowing for safety and adjustment for different circumstances.
Hope this is helpful.
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