First check engine light at 232000kms

[Fummins]

I didn't think of that with the header. We'll never be going that route with our cars though.

Yeah you got me there! I'm probably doing more damage than the entire fleet would do going catless I'll likely be running a 4 cylinder this winter though

[stevedmc]

Really? I may or may not have made a sarcastic post on a different thread after someone suggested removing the cat. Thankfully I forget things quickly and will probably give that a try first. We don't have any emission testing at all here. So far... I usually prefer to fix thing properly but this may be an exception if it becomes a common problem on these cars. 2 out of the 3 cars we have with over 230k have had this problem now.

Removing cats is the way to go! Free up that exhaust so the engine can breath and of course, let us know if it confuses the computer or not.