Pardon me if this should be obvious but I have never installed de-cat exhaust or even full exhaust. In the past, I’ve just done slip on’s. I‘m doing research on what exhaust I want to buy for my 2020 M and I’m considering a full exhaust in order to get the sound I want. Im well aware to take full advantage of a full system you would need a tune, but if you do a full de-cat exhaust without doing a tune, will you get a check engine light for emissions/lack of the converters? I’m more familiar with this process on cars and the fact that the car monitors catalytic converter efficiency with the oxygen sensors and if you remove the converters the light will come on with a P0420 code because you removed them. Do these bikes monitor catalytic converters efficiency?