Quote:
Originally Posted by carguy19
I don't know if this works for sure on BMWs but on my Audi S4 that I sold a few years back and on my 14 GT500, if you use an O2 spacer to take the O2 sensor out of the fast moving exhaust gas flow, it didn't trip a CEL.
One of the tuners or vendors should be able to tell you whether that will work on our cars. Good question for someone from BMS.
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It will work on any car (just get the better quality one so it won't rust). Post cat 02 is for cat efficiency only. I've used the extender on 40+ cars and it worked 100% of the time for catless downpipes. "Off road use only"