Wideband O2 Conversion

MS41.3 supports the replacement of your stock O2 sensor with an aftermarket wideband sensor that ouputs 0-5V. Once this WBO2 sensor is connected to 'Front O2 Bank 1' and 'Single Channel' O2 Mode is selected in MS41 ECU Portal, Narrowband Emulation can be enabled to run your stock ECU off a wideband.

Additionally, you can even run the ECU in full-time Closed Loop and have it target an AFR based on Load and RPM. Then tune your main Fuel Map accordingly so Fuel Trims are close to zero.

Here is a video of my car as proof of concept - https://www.youtube.com/watch?v=cCCSOURq4lo