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The AEM does not work with stock narrowband O2 sensors. The only way to have any kind of closed loop control on an AEM is to purchase a wideband controller. Then, you feed the 0-5 volt AFR output signal produced by the controller into the AEM and calibrate the AEM tables so that they reflect the proper AFR for each given voltage point (which the wideband manufacturer should be able to provide). The O2 wizard has settings for some common controllers so you don't have to know the voltage output information for these. After this is done you have to finish the calibration procedure by setting the O2 gain parameter properly.
The AEM drivers work only with high impedance injectors. This means that you either run low impedance injectors and leave the resistor pack connected or that you run high impedance injectors and bypass the resistors.
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