808Mazda3
02-15-2007, 07:12 AM
i am looking at getting a set of headers, and plan to take off one of the cats on my Mazda 3 HB.. The only thing is i dont know which one to take off since i am not sure if both of them have the 02 senor.. I do plan to get a high flow cat later down but just for now all i am planning is headers and a cat remove. Thanks for the help..