spdracerut

Yes, OE cats will fail eventually. Actually, they fail eventually even without track use which is why we have obd-2 systems that monitors the health of the cat. They are wear items, they can just be made to die quickly if you track often because of sustained high temperature exposure and other things like fsmich mentioned.

doctj

If you were in the US I’d tell you to snag these

https://rennlist.com/forums/market/1392710