[GianlucaM235]

I’m going to be installing my catless downpipe this week on my m235. I’m not planning on tuning the car but wanted to get rid of the cel. Has anyone used 02 spacers with success? I just don’t want the engine light, I don’t need to pass any standards. Also do I just need one 02 spacer, and would that be to the turbo side or exhaust side sensor because there is two of them? Thanks for the help.

[designatedposter]

didnt work for me, and if you choose to try, ONLY the rear o2 sensor (exhaust side)

[tadmcmichael]

You also have the option to do a catted O2 sensor on the exhaust side. I would think that would be much more effective than just a spacer.

[Info@mad-us.com]

g80 and b58 guys use the catted spacer from Big daddies .. I cant spell the company name out but hope that helps