AA Track Pipe on a '96 328i

[BriOliver]

I wanna put a track pipe on my 328i but have read the O2 sim's generally don't keep the CEL from coming on. I've seen some people use the spark plug anti foulers with success but my question is most sites say the AA track pipe has "Single Oxygen Sensor placement" so what do you do with the other O2 sensor if theres no hole to put it in?

[Dan23212]

i have an AA track pipe. I brought mine to an exhaust shop who drilled and welded another bung in there for me.

[BriOliver]

Did you end up using spark plug anti foulers to keep the CEL from coming on then?

[Dan23212]

yes