If you are using a ME221 system (The ME442 has wideband built-in) then you may wish to feed into the ECU an AFR signal from an external controller such as an Innovate or AEM wideband gauge. Simply take the 0-5v signal from the external gauge/controller and feed it either into the stock O2 signal wire (if using a Plug-In) or into an analog voltage input of your choice. Be sure to set the input setting to O2 RAW in the Analog Input settings and calibrate the WBO2 HRT as required.


You will need to configure your lambda control settings as usual to make use of the data, or, it can be used purely as a readout in MEITE.


If your wideband controller also features a "signal ground" wire, then it should be grounded as near to the ECU as possible.


For connectivity information please see the wiring lambda sensors section.


There is also a guide online in our technical articles here.