Question: With the new DC Sports 4-2-1 Full cat-delete race header, i wonder if you need an o2 sim to keep from running rich or lean due to the computer realizing theres no cat.
My assumed awnser: Yes, because if no o2 sim is used, it will cause our already crappy d17a2 motors to run even crappier and **** me off in the process.

Correct me if im wrong... But im assuming with a cat-delete option, the simulator should be purchased in tandem.

I know what youre thinking, "That header isnt street legal, as it deletes the cat out of the exhaust"

After you would have said that, I would have begun laughing, because in TN we dont have emissions testing. So and give me a for living in a state that I can do anything to my car and have no one to awnser to.