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Hi gents, I was analyzing our OEM downpipe and noticed there is a 5 inch catalytic converter after each O2 sensor insertions. - circled in pic. Does that mean if I were to remove the 1 after the 2nd catalytic converter, and reuse the downpipe, theoretically the CEL should not come on? I am...

you can turn these codes/CEL off with the OBD2 reader right? and repeat it when necessary.

Thanks mate. Will the car run properly without a tune? assuming I can live with the CEL? will it be too lean? hopefully a tuning guru can shed some light on this?

Dear friends, I am about to embark on making my exhaust sound better with a catless downpipe with a 'L' extension for the O2 sensor. I read that this may be successful in preventing a CEL. Can I confirm that even if a CEL occurs, the car will still run fine with no ill effects? also, what can...

That is great news. I am thinking of doing the same. Would you have more pictures? I will be asking my mechanic to replicate it. Any pictures of the inside of the muffler before you gutted it?