One of my cats are bad so I’m considering going catless. Just wondering how yall pass emissions and if they are worth buying or if i should just buy new cats. I heard about doing o2 sensor spacers to pass emissions. Any thoughts on what I should do?

 

Hey,
Not sure what the rules are where you are. But if you have a smog test you wont pass without the cats end of story basically.
Imo, you should get cats because they reduce the emissions which is good for everyone and then just get straight through mufflers or remove the muffler all together if you want more sound.

 

How do you plan to go catless? Where you going to get a catless downpipe? They are built into the Exhaust Manifold headers if you are talking about the 1st set of down cats.